PROCESS FOR THE PREPARATION OF A-ETHYNYL BENZHYDROLS AND SOME NEW COMPOUNDS PREPARED THEREBY

摘要

The invention is a new process for the preparation of alpha -ethynyl-benzohydrols and of ring-substituted derivatives thereof by reacting the starting benzophenone or a ring-substituted derivative thereof with acetylene in a solvent delivering no protons, in the presence of an alkali metal tertiary alcoholate, preferably potassium-tert.-butylate or potassium-tert.-amylate. Also new substituted derivatives of alpha -ethynyl-benzhydrol are prepared by the invention.