Transposition oxy-cope assistee par le trifluoroacetate mercurique en quantite stoechiometrique et en quantite catalytique
作者:Norbert Bluthe、Max Malacria、Jacques Gore
DOI:10.1016/0040-4020(84)85011-5
日期:1984.1
Tertiary 1,5-hexadien-3-ols are transformed at room temperature into δ-ethylenic ketones in 35-90%, yields under two sets of conditions: treatment with one molar equivalent of mercuric trifluoroacetate followed by demercuration of the intermediate α-mercuro ketone with sodium borohydride; and treatment with 0.2 molar equivalent of t of lithium trifluoroacetate or trifluorométhansulfonate. The reactions
Oxydation d'alcools ω-vinylalléniques par l'hydroperoxyde de tertiobutyle
作者:Alain Doutheau、Jacques Gore、Joseph Diab
DOI:10.1016/s0040-4020(01)96424-5
日期:1985.1
The oxidation of α-vinylallenic alcohols 3 with t-butylhydroperoxide in the presence of catalytic amounts of vanadyl acetylacetonate, yields the epoxides 6 or, mainly, the cyclopentenones 5 depending on the secondary or tertiary class of the alcoholic function. In the same conditions, the vinylallenic alcohols 4 lead only to cyclopentenones 7.
S<sub>N</sub>-opening of allylic epoxides by vinylic-type organometallic derivatives
作者:Jean Manuel Mas、Max Malacria、Jacques Goré
DOI:10.1039/c39850001161
日期:——
Hexa-1,5-dien-3-ols are selectively obtained in the reaction of allylicepoxides with lithium trialkylalkynylborates.
在烯丙基环氧化物与三烷基炔基硼酸锂的反应中选择性地获得六(1,5-二烯-3-醇)。
Process for the preparation of .delta.-ethylenic carbonyl compounds
申请人:Rhone-Poulenc Sante
公开号:US04510330A1
公开(公告)日:1985-04-09
Process for the preparation of .delta.-ethylenic carbonyl compounds of the formula: ##STR1## by the oxy-Cope rearrangement of a diethylenic alcohol of the formula: ##STR2## in which the transformation is carried out in the presence of a catalytic amount of a divalent palladium compound. In the depicted formulae R.sub.1, R.sub.4 and R.sub.6 each represent a hydrogen atom or a hydrocarbon radical, R.sub.2 represents a hydrogen atom and R.sub.3 and R.sub.5 each represent a hydrocarbon radical, or R.sub.3 and R.sub.4 together represent an alkylene radical (--CH.sub.2 --).sub.n (wherein n is an integer from 3 to 20 inclusive) in which one or more carbon atoms can optionally carry as substituent(s) one or more alkyl radicals containing 1 to 4 carbon atoms. The carbonyl products are useful as starting materials for the preparation of compounds intended for use in pharmacy, in agriculture or perfumery.