Steuerung einer reaktionsverzweigung durch geeignete phasentransfer-katalysatoren anwendungen der phasentransfer-katalyse 37.
作者:Eckehard V. Dehmlow、Jürgen Wilkenloh
DOI:10.1016/s0040-4039(00)96761-3
日期:1987.1
The influence of phase transfer catalyst structure on a branching of reaction paths is recorded. An almost complete change-over of mechanisms can be achieved. Reaction of allyl bromide with bromoform/sodium hydroxide/catalyst yields carbene adduct and displacement products and . Two new and unusual catalysts, AsPh4Cl and [Ph3PNPPh3] Cl, give substitution: addition ~10:1, wheras NMe4Cl and benzo-15-crown-5
记录相转移催化剂结构对反应路径分支的影响。可以实现几乎完全的机制转换。烯丙基溴与溴仿/氢氧化钠/催化剂的反应产生卡宾加合物和取代产物和。两个新的和不寻常的催化剂,ASPH 4 Cl和[PH 3 PNPPh 3 ]氯,给替代:除了〜10:1,wheras NMe4Cl和苯并-15-冠-5导致〜1:4,无论是在高转换率。