Säurekatalysierte Dienon-Phenol-Umlagerungen von Allylcyclohexadienonen; ladungsinduzierte und ladungskontrollierte sigmatropische Reaktionen
作者:U. Widmer、J. Zsindely、Hans-Jürgen Hansen、Hans Schmid
DOI:10.1002/hlca.19730560104
日期:1973.1.31
The rearrangement of 10-allyl-2-oxo-Δ1(9), 3-hexahydronaphthalene (12) catalysed by trifluoroacetic acid and other Bronsted acids yielded almost exclusively the [3s, 3s]-products, 1- and 3-allyl-5,6,7,8-tetrahydro-2-naphthol (16 and 15, respectively). The rearrangement of 12 with trifluoroacetic anhydride or acetic anhydride/sulfuric acid, yields, besides 15 and 16, appreciable amounts of the [1s,
三氟乙酸和其他布朗斯台德酸催化的10-烯丙基-2-氧代-Δ1 (9),3-六氢萘(12)的重排几乎只产生了[3 s,3 s ]产物1-和3- 5,6,7,8-四氢-2-萘烯丙基(分别为16和15)。用三氟乙酸酐或乙酸酐/硫酸对12进行重排,除15和16外,还会产生可观数量的[1 s,2 s ]重排产物4-烯丙基5,6,7,8-四氢- 2-萘酚(14)(表1)。