申请人:Ciba-Geigy Corporation
公开号:US04255351A1
公开(公告)日:1981-03-10
Compounds of the formulae Ia, Ib, IIa and IIb ##STR1## are described, wherein R represents alkyl, haloalkyl, benzyl, naphthyl or substituted or unsubstituted phenyl and one of R.sub.1 and R.sub.2 represents methyl and the other represents hydrogen or methyl, or R.sub.1 and R.sub.2 together represent alkylene of 2 or 3 carbon atoms. The compound of the formulae Ia, Ib, IIa and IIb are valuable intermediates for the manufacture of pyrethroid pesticides or precursors thereof.
描述了化学式Ia、Ib、IIa和IIb的化合物,其中R代表烷基、卤代烷基、苄基、萘基或取代或未取代的苯基,R.sub.1和R.sub.2中的一个代表甲基,另一个代表氢或甲基,或者R.sub.1和R.sub.2一起代表2或3个碳原子的烷基。化学式Ia、Ib、IIa和IIb的化合物是制造拟除虫剂或其前体的有价值的中间体。