Process for the preparation of .alpha.-ethynyl benzophenones

Details Process for the preparation of .alpha.-ethynyl benzophenones Process for the preparation of .alpha.-ethynyl benzophenones

C - Chemistry, Metallurgy

07

C

260/600.1, 260/6

C07C 33/00 (2006.01) C07C 29/42 (2006.01)

Patent

CA 1039309

ABSTRACT OF THE DISCLOSURE The invention is a new process for the preparation of ring- substituted .alpha.-ethynyl-benzhydrol derivatives thereof by reacting the corresponding benzophenone derivative with acetylene in an aprotic, in the presence of an alkali metal tertiary alcoholate, preferably potassium- tert.-butylate or potassium-tert.-amylate. Also new substituted derivatives of .alpha.-ethynyl-benzophenone are prepared by the invention. These compounds exert a blocking or inducing effect on the microsomal enzyme system of the liver and also possess antiviral and fungicidal properties. They are also valuable starting materials in the synthesis of other biologically active compounds.

207026

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