Catalytic cyclophanes. 4. Supramolecular catalysis of benzoin condensations by a thiazolium cyclophane

Catalysis by 13',16':18',21'-Dietheno-1,1″-diethyl-3',14',20',31',48',51'-hexamethyl-40-(4-methylthiazolium-3-ylacetyl) dispiro [piperidinium-4,17'-[5,12,22,29] tetraoxa [37,40,43] triazatetracyclo [31.13.1.0 4,45 .0 30,35 ] heptatetraconta-1',3',13',15',18',20',30',32',34',45'-decaene-47',4″-piperidinium]-38',42'-done Trichloride