catalyzed intramolecular hydroalkoxylation reaction is presented, as a transition metal free, inexpensive, and very mild process for the highly atom economic formation of cyclic ethers from γ,δ-unsaturated alcohols. In contrast to most of the previously reported procedures, roomtemperature conditions are fully sufficient in most cases for a high yielding cycloisomerization in the presence of a combination
Substituted alkenes, processes for their preparation and their use as pesticides
申请人:SCHERING AKTIENGESELLSCHAFT
公开号:EP0378285A1
公开(公告)日:1990-07-18
There are described new substituted alkenes of of general formula I
in which in which R1, R2, R3, R4, R5, R6, R7, Y and Z, have the meanings given in the description and processes for their preparation. The compounds can be used as pesticides, especially against insects and mites.