H. Suschitzky

发表

1142. Decomposition of halogen-substituted phenyl azides

R. Smalley, H. Suschitzky, 1964 .

Decomposition of aromatic azides in ethanethiol

S. Carroll, H. Suschitzky, B. Nay, 1977 .

New organometallic derivatives of 1,6-methano[10]annulene

R. Neidlein, W. Kramer, H. Suschitzky, 1991 .

Condensed thiophen ring systems. Part XVIII. Thienoazepines and thienobenzoxazoles from 6-azidobenzo[b]thiophens

David S. Taylor, H. Suschitzky, B. Iddon, 1975 .

Syntheses of heterocyclic compounds. Part XXIX. Substituted 2,3-dihydro-1H-1,5-benzodiazepines

H. Suschitzky, J. Herbert, 1974 .

Competitive cyclisation of singlet and triplet nitrenes. Part III. The effect of temperature on tile reactivity of thermally and photochemically derived arylnitrenes

O. Meth–Cohn, I. Mcrobbie, H. Suschitzky, 1976 .

Competitive cyclisation of singlet and triplet nitrenes. Part II. Cyclisation of 2-nitrenophenyl- thiophens, -benzothiazoles and -benzimidazoles.

O. Meth–Cohn, I. Mcrobbie, H. Suschitzky, 1976 .

Competitive cyclisations of singlet and triplet nitrenes. Part I. Cyclisation of 1-(2-nitrenophenyl)pyrazoles

O. Meth–Cohn, I. Mcrobbie, H. Suschitzky, 1976 .

Polyhalogeno-aromatic compounds. Part XVI. The preparation and reactions of polyhalogenophenyl- and polyhalogenopyridyl-hydrazines

I. Collins, S. Roberts, H. Suschitzky, 1971 .

The use of arenediazonium hexafluoro-antimonates and -arsenates in the preparation of aryl fluorides

H. Suschitzky, C. Sellers, 1968 .

Synthesis and some reactions of 3,4,5,6-tetrahydro-3,6-dimethyl-2,6-.methano-3-benzazocin-1(2H)-one (2,5-dimethyl-8-oxo-6,7-benzomorphan)

H. Suschitzky, R. T. Parfitt, B. Iddon, 1980 .

Aromatic fluorine chemistry at Salford

H. Suschitzky, B. Wakefield, 2000 .

Heterocycles by Ring Closure of Ortho-Substituted t-Anilines (The t-Amino Effect)

O. Meth–Cohn, H. Suschitzky, 1972 .

SYNTHESIS AND REACTIONS OF TRANS-2-(2′-NITROPHENYLTHIO)-1-CHLOROINDANE

H. Suschitzky, P. Einbaum, 1985 .

Condensed thiophen ring systems. Part 21. 5-Arylthieno[3,2-c]pyrazoles and attempted preparation of 5-arylthieno[2,3-c]pyrazoles, resulting in a novel thiophen to pyrrole transformation

P. Gallagher, H. Suschitzky, B. Iddon, 1979 .

Novel ring transformation of a thiophen into a pyrrole

P. Gallagher, H. Suschitzky, B. Iddon, 1978 .

Condensed thiophen ring systems. Part 20. Synthesis of 5-arylthieno-[3,2-b]pyrroles and 5-arylthieno[3,2-c]pyrazoles

H. Suschitzky, B. Iddon, V. Colburn, 1977 .

Intramolecular cyclisation of arylalkyl isothiocyanates. Part I. Synthesis of 1-substituted 3,4-dihydroisoquinolines

H. Suschitzky, M. Gittos, B. Iddon, 1976 .

Polyhalogenoaromatic compounds. Part 42. 13C N.m.r. spectra of polyhalogeno-pyridines and -pyrimidines

H. Suschitzky, B. Wakefield, B. Iddon, 1980 .

Polyhalogenoaromatic compounds. Part 43. Inter- and intra-molecular reactions of polychloroaromatic compounds with copper

H. Suschitzky, B. Wakefield, A. Mack, 1980 .

Polyhalogenoaromatic compounds. Part 39. Synthesis of the bromoand lodo-tetrachloropyridines

H. Suschitzky, B. Wakefield, A. Mack, 1979 .

Abnormal nucleophilic substitution of 3-trichloromethylpyridines by methoxide

R. S. Dainter, N. Hughes, H. Suschitzky, 1985 .

Polyhalogenoaromatic compounds. Part 48. Reactions of tetrachioro-4-cyanopyridine with mono- and di-functional nucleophiles

R. S. Dainter, H. Suschitzky, B. Wakefield, 1982 .

Transformations of trichloromethyl groups during reactions of 3-trichloromethylpyridines with methoxide

R. S. Dainter, G. Varvounis, N. Hughes, 1989 .

Synthesis of 1,6-methano[10]annulenopyridines by tandem aza-Wittig reaction/electrocyclisation

R. Neidlein, W. Kramer, T. Bøhn, 1994 .

The synthesis of novel N-heterocycles from 2-azido-, 2-vinylazido- and 2-formyl-1,6-methano[10]annulene-2-carbaldehydes

R. Neidlein, W. Kramer, T. Bøhn, 1991 .

870. Heterocyclic fluorine compounds. Part VI. Fluoroisoquinoline N-oxides

H. Suschitzky, M. Bellas, 1964 .

Polyhalogenoaromatic Compounds. Part 51. Synthesis of New Heterocycles from Pentachloropyridine and 2,3,5,6-Tetrachloropyridine with Aliphatic Diamines

J. Rius, H. Suschitzky, L. Juliá, 1992 .

Polyhalogenoaromatic compounds. Part 50. Reactions of 4-benzyloxytetrahalogenopyridines with nucleophiles

J. C. Barnes, H. Suschitzky, L. Julia, 1983 .

13C-N.M.R. spectra of polychloropyridines; structural assignments

O. Meth–Cohn, H. Suschitzky, B. Wakefield, 1976 .

POLYHALOAROMATIC COMPOUNDS. PART 41. PHOTOCHEMICAL DEHALOGENATION AND ARYLATION REACTIONS OF POLYHALOAROMATIC AND POLYHALOHETEROAROMATIC COMPOUNDS

H. Suschitzky, B. Wakefield, B. Iddon, 1980 .

Polyhalogeno-aromatic compounds. Part XXXII. Synthesis and some reactions of tetrachloropyridine-2-thiol and related compounds

H. Suschitzky, B. Iddon, A. Thompson, 1974 .

Polyhalogeno-aromatic compounds. Part XXV. Quaternisation of polyhalogenopyridines and reactions of the pyridinium salts

H. Suschitzky, E. Ager, 1973 .

Polychloroaromatic compounds. Part I. Oxidation of pentachloropyridine and its NN-disubstituted amino-derivatives with peroxyacids

S. Roberts, H. Suschitzky, 1968 .

Photolysis of quinolyl azides in aliphatic thiols. Synthesis of o-alkylthioquinolylamine

E. Scriven, H. Suschitzky, B. Nay, 1982 .

2H-benzimidazoles (isobenzimidazoles). Part 10. Synthesis of polysubstituted o-phenylenediamines and their conversion into heterocycles, particularly 2-substituted benzimidazoles with known or potential anthelminthic activity

H. Suschitzky, B. Iddon, J. Hazelton, 1995 .

SYNTHESIS AND SOME REACTIONS OF 3,4,5,6‐TETRAHYDRO‐3,6‐DIMETHYL‐2,6‐METHANO‐3‐BENZAZOCIN‐1(2H)‐ONE (2,5‐DIMETHYL‐8‐OXO‐6,7‐BENZOMORPHAN)

H. Suschitzky, R. T. Parfitt, B. Iddon, 1981 .

906. Synthetic uses of polyphosphoric acid

H. Suschitzky, D. Denton, 1963 .

Beckman cleavage of 1,2,3,4,5,6-hexahydro-3,6-dimethyl-2,6-methano-3-benzazocin-11-one oxime (2,5-dimethyl-9-oxo-6,7-benzomorphan oxime); a new route to 3-benzazocines

D. Scopes, H. Suschitzky, B. Iddon, 1983 .

Competitive cyclisations of singlet and triplet nitrenes. Part 8. The 1-(2-nitrenophenyl)pyrazoles and related systems

O. Meth–Cohn, I. Mcrobbie, H. Suschitzky, 1980 .

Competitive cyclisations of singlet and triplet nitrenes. Part 5. Mechanism of cyclisation of 2-nitrenobiphenyls and related systems

O. Meth–Cohn, I. Mcrobbie, H. Suschitzky, 1977 .

Synthesis of heterocyclic compounds. Part 34. Reactions of chlorosulphonyl isocyanate with carbon–nitrogen double bonds

H. Suschitzky, R. Hull, R. E. Walrond, 1977 .

Reactions of formylchromone derivatives. Part 2. Addition reactions of 3-(aryliminomethyl)chromones

J. Frost, H. Suschitzky, A. O. Fitton, 1979 .

3H-azepines and related systems. Part 2. The photolyses of aryl azides bearing electron-withdrawing substituents

R. Smalley, H. Suschitzky, R. Purvis, 1984 .

Photolysis of quinolyl and isoquinolyl azides in the presence of methoxide ions. Synthesis of benzodiazepines and pyridoazepines

E. Scriven, R. Smalley, H. Suschitzky, 1982 .

Developments in Arylnitrene Chemistry: Syntheses and Mechanisms [New synthetic methods (31)]

P. T. Gallagher, E. Scriven, P. Gallagher, 1979 .

Reactions of formylchromone derivatives. Part 5. Transformations of 3-formylchromones into pyrroles and pyridines

P. Clarke, J. Suschitzky, H. Suschitzky, 1985 .

A simple route to polychlorobenzimidazoles and related systems

O. Meth–Cohn, H. Suschitzky, J. Martin, 1974 .

Syntheses of heterocyclic compounds. Part XXV. Action of acid on NN-disubstituted o-nitroanilines: benzimidazole N-oxide formation and nitro-group rearrangements

O. Meth–Cohn, H. Suschitzky, R. Fielden, 1973 .

Thermolysis of isatoic anhydride and benzotriazinone

R. Smalley, H. Suschitzky, E. M. Tanner, 1966 .

Thermolytic reactions of benzotriazinone and isatoic anhydride

R. Smalley, H. Suschitzky, H. Crabtree, 1968 .

Syntheses of heterocyclic compounds—I : Cyclization of N-substituted O-nitroanilines

R. H. Smith, H. Suschitzky, 1961 .

Photolysis of quinolyl and isoquinolyl azides in primary and secondary aliphatic amines: synthesis of bicyclic azepines, diazepines, and quinolyl- and isoquinolyl-diamines

E. Scriven, H. Suschitzky, B. Nay, 1982 .

Heterocyclic syntheses. Part XXIII. Synthesis and reactions of 2,3-dihydrobenzimidazoles

H. Suschitzky, R. Garner, G. V. Garner, 1970 .

Five-membered ring systems

O. Meth–Cohn, H. Suschitzky, G. Boyd, 1986 .

Pyrolysis of 2-azidoaryl thioketones: A novel route to 2,1-benzisothiazoles

J. Ashby, H. Suschitzky, 1971 .

Acid-catalysed cyclisation of o-nitrophenylhydrazines to N-aminobenzimidazoles

O. Meth–Cohn, H. Suschitzky, D. Latham, 1973 .

Thermal and photolytic cyclisation, rearrangement, and denitration reactions of o-nitro-t-anilines

O. Meth–Cohn, H. Suschitzky, R. Fielden, 1970 .

A new and simple synthesis of benzimidazole N-oxides

O. Meth–Cohn, H. Suschitzky, D. Price, 1969 .

Thermal cyclisation of aromatic nitrocompounds

H. Suschitzky, M. E. Sutton, 1967 .

499. Syntheses of heterocyclic compounds. Part VIII. Cyclisation of N-2-acylaminophenyl heterocycles with polyphosphoric acid

O. Meth–Cohn, H. Suschitzky, 1964 .

893. Syntheses of heterocyclic compounds. Part IV. Oxidative cyclisation of aromatic amines and their N-acyl derivatives

O. Meth–Cohn, H. Suschitzky, 1963 .

Syntheses of heterocyclic compounds. Part XXXIII. Preparation and reactions of 4-(2-dialkylaminophenyl)azetidin-2-ones

H. Suschitzky, R. Bentley, 1976 .

Nuclear magnetic resonance study of hindered rotation in N-acyl derivatives of 5- and 6-membered N-heterocycles

O. Meth–Cohn, H. Suschitzky, G. V. Garner, 1971 .

604. The so-called “ 1-fluoro-3: 4-dinitrobenzene.”

H. Suschitzky, 1953 .

Synthesis of quinoxalinones by the reaction of o-phenylenediamines with dimethyl acetylenedicarboxylate

H. Suschitzky, B. Wakefield, R. Whittaker, 1975 .

2H‐Benzimidazoles (Isobenzimidazoles). Part 10. Synthesis of Polysubstituted o‐Phenylenediamines and Their Conversion into Heterocycles, Particularly 2‐Substituted Benzimidazoles with Known or Potential Anthelminthic Activity.

H. Suschitzky, B. Iddon, J. Hazelton, 1996 .

2H-benzimidazoles (isobenzimidazoles). Part 9. Synthesis and reactions of 4,6-dibromo-2H-benzimidazole-2-spirocyclohexane

H. Suschitzky, A. D. Redhouse, B. Iddon, 1995 .

2,3‐Dihydrospiro[1H‐4‐ and 5‐azabenzimidazole‐2,1′ ‐cyclohexane] ( = Spiro[cyclohexane‐1,2′(3′H)‐1′H‐imidazo[4,5‐b]pyridine] and Spiro[cyclohexane‐1,2′(3′H)‐1′H‐imidazo[4, 5‐c]pyridine]): Reactions with Nucleophiles

R. Neidlein, W. Kramer, H. Suschitzky, 1994 .

2H-benzimidazoles. Part 5. Convenient synthons for tricyclic heterocycles†‡

R. Neidlein, W. Kramer, H. Suschitzky, 1990 .

Fluorine as a label for detecting reaction mechanism

H. Suschitzky, P. Miles, 1963 .

Reactions of acylarylnitrosamines—II

H. Suschitzky, P. Miles, 1962 .

Polyhalogenoaromatic compounds. Part 40. Synthesis and thermal rearrangements of some polychloropyridines

H. Suschitzky, B. Iddon, John A. Taylor, 1979 .

Reaction of some azetidin-2-ones with secondary amines

H. Suschitzky, Derek Johnson, 1976 .

Decomposition of aromatic azides in ethanethiol

S. Carroll, H. Suschitzky, B. Nay, 1977 .

Deazidation of aryl azides with hydrazine hydrate. A new synthesis of 3-aminoindazole

R. Smalley, H. Suschitzky, T. Paterson, 1978 .

Thermal rearrangement of some 3-substituted-2,1-benzisoxazoles

Richard H. Smith, R. Smalley, H. Suschitzky, 1980 .

Thermal rearrangement of 3-(β-styryl)-2,1-benzisoxazoles. A new synthesis of 3-aryl-4-quinolones and 2-arylideneindoxyls

Richard H. Smith, R. Smalley, H. Suschitzky, 1978 .

Reactions of formylchromone derivatives. Part 2. Addition reactions of 3-(aryliminomethyl)chromones

J. Frost, H. Suschitzky, A. O. Fitton, 1979 .

ADDITION REACTIONS OF N-(CHROMONE-3-YLIDENE)ANILINES

J. Frost, H. Suschitzky, A. O. Fitton, 1975 .

1151. A new preparation of aryldiazonium tetrafluoroborates

H. Suschitzky, C. Sellers, 1965 .

PHOTOLYSIS OF PHENYL AZIDE IN THE PRESENCE OF ′NAKED′ ANIONS

E. Scriven, R. Colman, H. Suschitzky, 1981 .

Synthesis of 2-substituted chromones, chromanones, and their thio analogues using organocopper reagents

P. Clarke, T. Wallace, J. Suschitzky, 1986 .

Polyhalogeno-aromatic compounds. Part XXVII. Reactions of polyhalogenopyridines and their N-oxides with benzenethiols, with nitrite, and with trialkyl phosphites, and of pentachloropyridine N-oxide with magnesium

H. Suschitzky, Jack Bratt, 1973 .

Polyhalogenoaromatic compounds. Part XIII. The reduction of pentachloropyridine and derivatives with lithium aluminium hydride and other complex metal hydrides

S. Roberts, H. Suschitzky, F. Binns, 1970 .

Reactions of n-butyl-lithium with 2,3,5,6-tetrachloro-4-mercapto- and 2,3,5,6-tetrachloro-4-methylmercapto-pyridine

H. Suschitzky, B. Iddon, E. Ager, 1969 .

Studies in the xanthone series—III: Preparation and reactions of 1-acetyl-2-hydroxyxanthone

H. Suschitzky, F. Lamb, 1959 .

Benzofurazan N-oxides as synthetic precursors. Part 2. Conversion of benzofurazan N-oxides into 2H-benzimidazoles and some unusual reactions of 2H-benzimidazoles

O. Meth–Cohn, H. Suschitzky, D. Latham, 1977 .

Syntheses of heterocyclic compounds. Part XXXII. Intramolecular 1,3-dipolar cycloadditions of 2-allyloxy- and 2-prop-2-ynyloxy-aromatic aldehyde azines

H. Suschitzky, S. S. Mathur, 1975 .

PREPARATION AND REACTIONS OF QUATERNARY ALDAZINES

H. Suschitzky, S. S. Mathur, 1975 .

Syntheses of heterocyclic compounds, part XXI. Oxazoles from pyrolysis of aryl and heterocyclic azides in a mixture of acetic and polyphosphoric acid

H. Suschitzky, E. B. Mullock, 1968 .

Decomposition of some substituted azidoindoles and azidohexahydrocarbazoles

E. Scriven, R. Newton, H. Suschitzky, 1979 .

The photolysis of o-azidobenzoic acid derivatives: a practicable synthesis of 2-alkoxy-3-alkoxycarbonyl-3H-azepines

R. Smalley, H. Suschitzky, R. Purvis, 1974 .

Polyhalogeno-aromatic compounds. Part XIV. Nucleophilic substitution and peroxy-acid oxidation of pentabromopyridine and some of its NN-dialkylamino- and bis-(NN-dialkylamino)-derivatives

I. Collins, H. Suschitzky, 1970 .

Polyhalogeno-aromatic compounds. Part VIII. Reactions of hexabromobenzene with nucleophiles

I. Collins, H. Suschitzky, 1969 .

Polyhalogenoaromatic compounds. Part VI. Nucleophilic reactions of polyfluoronaphthalenes, NN-disubstituted aminopolyfluoronaphthalene N-oxides, and NN-disubstituted aminopentafluorobenzene N-oxides

H. Suschitzky, D. Price, J. Hollies, 1969 .

Aromatic Fluorine as a Chemical Label for Detecting Reaction Mechanism

H. Suschitzky, 1967 .

762. Heterocyclic fluorine compounds. Part V. Fluoropyridine oxides and fluoroquinoline N-oxides

H. Suschitzky, M. Bellas, 1963 .

139. Heterocyclic fluorine compounds. Part IV. Monofluoroindazoles

H. Suschitzky, I. K. Barben, 1960 .

Heterocyclic fluorine compounds—III: Monofluoroxanthones

H. Suschitzky, L.A. Flippin, P. Koch, 1959 .

Heterocyclic fluorine compounds. Part II. Bz-Monofluoroindoles

H. Suschitzky, L.A. Flippin, J. Brunton, 1955 .

149. A simple preparation of acid anhydrides

R. Smalley, H. Suschitzky, 1964 .

A reporter group delivery system with both absolute and selective specificity for thiol groups and an improved fluorescent probe containing the 7-nitrobenzo-2-oxa-1,3-diazole moiety.

M. Shipton, T. Stuchbury, K. Brocklehurst, 1975, The Biochemical journal.

Reactions of some substituted isoxazoles with organolithium reagents

S. Roberts, J. Gainer, H. Suschitzky, 1976 .

Polyhalogenoaromatic compounds. Part XX. Some reactions of decachlorobiphenyl

H. Suschitzky, F. Binns, 1971 .

Six-membered ring systems

G. P. Ellis, O. Meth–Cohn, R. Smalley, 1980 .

The action of sec-aliphatic amines on benzofuroxans

O. Meth–Cohn, H. Suschitzky, D. Latham, 1972 .

The reaction of benzofuroxan with -anisylazide: Trapping of the -dinitroso-intermediate

E. Scriven, H. Suschitzky, A. Bulacinski, 1975 .

Photolysis of pentachloropyridine and pentachloropyridine 1-oxide

H. Suschitzky, G. Chivers, E. Ager, 1972 .

916. The Graebe–Ullmann carbazole synthesis

H. Suschitzky, B. Ashton, 1957 .

Synthesis of novel 2,3-dihydro-8H-thieno[2,3-d]azepines and 1,2,3,4-tetrahydro-1H-3-benzazepines via photolyses of 6-azido-2,3-dihydrobenzo[b]thiophene and 6-azido-1,2,3,4-tetrahydronaphthalene

U. Jordis, F. Sauter, H. Suschitzky, 1988 .

Synthesis of novel 8H-thieno[2,3-d]azepines by photolysis of 6-azido-2,3-dihydrobenzo[b]thiophen

U. Jordis, F. Sauter, H. Suschitzky, 1983 .

Condensed thiophen ring systems. Part XIX. Synthesis of 6,7-dihydrothieno[3,2-c]pyridines and 4,5-dihydrothieno[2,3-c]pyridines by intramolecular cyclisation of 2-(2- or 3-thienyl)ethyl isothiocyanate

H. Suschitzky, M. Gittos, B. Iddon, 1976 .

456. Syntheses of heterocyclic compounds. Part II. Cyclisation of o-nitrophenyl oxygen ethers

H. Suschitzky, R. Higginbottom, 1962 .

546. Reactions of fluorine-substituted acylarylnitrosamines

H. Suschitzky, I. K. Barben, 1960 .

786. Heterocylic fluorine compounds. Part I. Monofluoro-1 : 2 : 3 : 4-tetrahydrocarbazoles and monofluorocarbazoles

H. Suschitzky, L.A. Flippin, 1953 .

Reactions of formylchromone derivatives. Part 1. Cycloadditions to 2- and 3-(aryliminomethyl)chromones

J. Frost, H. Suschitzky, A. O. Fitton, 1977 .

2H-benzimidazoles (isobenzimidazoles). Part 7. A new route to triclabendazole [5-chloro-6-(2,3-dichlorophenoxy)-2-methylthio-1H-benzimidazole] and congeneric benzimidazoles

F. A. Neugebauer, W. Kramer, H. Suschitzky, 1992 .

Synthesis and Reactions of Benzotriazolyl-Substituted Spiro[Cyclohexane-1,2′-2′H-Imidazo[4,5-b]Pyridine]

R. Neidlein, H. Suschitzky, H. Le, 2002 .

Reactions of 2,3-dihydrospiro[1H-4- and 5-azabenzimidazole-2,1′-cyclohexane] with nucleophiles: A potential route to some substituted aromatic heterocycles†

R. Neidlein, W. Kramer, H. Suschitzky, 1999 .

2H‐Benzimidazoles (Isobenzimidazoles). Part 7. A New Route to Triclabendazole (5‐Chloro‐6‐(2,3‐dichlorophenoxy)‐2‐methylthio‐1H‐ benzimidazole) and Congeneric Benzimidazoles.

F. A. Neugebauer, W. Kramer, H. Suschitzky, 1993 .

Heterocyclic syntheses. Part XXVIII. ortho-Dialkylamino-benzenesulphonyl azides, -benzoyl azides, and -benzoyldiazomethanes

O. Meth–Cohn, H. Suschitzky, John R. Martin, 1974 .

Reactions of Formylchromone Derivatives; 31. A Facile Synthesis of Fused Benzopyrano-benzothiazepinones, -benzoxazepinones, and -benzodiazepinones

H. Suschitzky, A. O. Fitton, P. G. Houghton, 1979 .

Syntheses and reactions of 2,2′-bisbenzimidazole systems

R. Neidlein, W. Kramer, H. Suschitzky, 1999 .

Peroxy-acid oxidation of NN-disubstituted aminotetrafluoro-, amino-3-chlorotrifluoro-, and amino-3,5-dichlorodifluoro-pyridines

S. Roberts, H. Suschitzky, 1969 .

2H-benzimidazoles (isobenzimidazoles). Part 3. Thermal isomerisation of substituted 2H-benzimidazoles to 1H-benzimidazoles

H. Suschitzky, B. Iddon, J. Herbert, 1988 .

Preparative routes to t-amine-substituted nitroanilines

D. Ainsworth, H. Suschitzky, 1966 .

Polyhalogenoaromatic compounds. Part 41. Photochemical dehalogenation and arylation reactions of polyhalogenoaromatic and polyhalogenoheteroaromatic compounds

H. Suschitzky, B. Wakefield, B. Iddon, 1980 .