Preparation of trifluoromethylated allylic alcohols from trifluoroacetaldehyde and organometallic compounds
作者:Nobuo Ishikawa、Gyu Koh Moon、Tomoya Kitazume、Kwon Choi Sam
DOI:10.1016/s0022-1139(00)83162-0
日期:1984.4
A number of allylic alcohols bearing a trifluoromethyl group at the α- or γ-position, and α-trifluoromethylated γ-enols and -ynols were prepared by the reaction of trifluoroacetaldehyde with a variety of organometalliccompounds. Most of the Reformatsky- or Grignard-type reactions required promotion by ultrasonic irradiation.
Novel carboxylic acid esters, method for their production and
申请人:Sumitomo Chemical Company, Limited
公开号:US05004753A1
公开(公告)日:1991-04-02
This invention relates to novel carboxylic acid esters represented by the formula (I) below, methods for their production and insecticides containing them as an active ingredient, and an alcohol compound useful as an intermediate for manufacturing carboxylic acid esters represented by the formula (I), ##STR1## wherein R.sup.1 represents a halogenated lower alkyl group, R.sup.2 represents a fluorine atom or a methyl group, R.sup.3 represents a hydrogen atom or a methyl group, R.sup.4 represents a hydrogen atom or a methyl group, and when R.sup.4 is a hydrogen atom, R.sup.5 represents a group of the formula, ##STR2## in which X and Y are the same or different and represent a hydrogen atom, a methyl group, a halogen atom or a halogenated lower alkyl group, and when R.sup.4 is a methyl group, R.sup.5 represents a methyl group.