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Abstract
Esterification is one of the most fundamental synthetic reaactions, for which many methods have been known.1) The present communication describes a new method of esterification of carboxylic acid with alkyl halide using Cu2o-base system. As the base component, isonitrile and pypridine are suitable. This new method was found in the course of the studies upon the exploration of the catalysis of Cu(I)-isonitrilecomplex.