Solvent-Free Organic Syntheses.

Ecological points of view must nowadays be taken into consideration in the development of new syntheses and apportioned due importance in assessing the viability of a new synthesis. A crucial factor here is the need to restrict the use of ecologically harmful organic solvents. Examples are presented which show that solvent-free reactions are not only of interest from an environmental viewpoint, but also offer considerable advantages in terms of yield, selectivity, and simplicity of the reaction procedures.

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