Process for preparing a .beta.-(fluoroalkyl or fluoroalkenyl)-.beta.-hydroxyalkyne

Abstract

A process for preparing a .beta.-(fluoroalkyl or fluoroalkenyl)-.beta.-hydroxyalkyne represented by the formula ##STR1## wherein R.sub.f represents a fluoroalkyl or fluoroalkenyl group and R represents an aliphatic or aromatic group, comprising reacting an alkyne represented by the formula R--C.tbd.CH (II) wherein R is the same as defined above with a fluorine containing aldehyde represented by the formula R.sub.f CHO (III) wherein R.sub.f is the same as defined above in the presence of catalyst under ultrasonic irradiation. A process for preparing an .alpha.-(fluoroalkyl or fluoroalkenyl)allyl alcohol represented by the formula ##STR2## wherein R.sub.f represents a fluoroalkyl or fluoroalkenyl group, R represents an aliphatic or aromatic group and R' represents a hydrogen atom or an aliphatic group, comprising (1) reacting a .beta.-(fluoroalkyl or fluoroalkenyl)-.beta.-hydroxyalkyne represented by the formula ##STR3## wherein R.sub.f and R are respectively the same as defined above with a isobutylmagnesium halide represented by the formula i--C.sub.4 H.sub.9 MgX wherein X represents a halogen atom, and (2) reacting the reaction mixture thus obtained above with a halide represented by the formula R'X' wherein X' represents a halogen atom and R' is the same as defined above.

Dependencies are inferred from the claim text.