Reaction of allyl bromides with bromoform and base under phase transfer conditions
作者:Mark S. Baird、Anthony G. W. Baxter、B. R. J. Devlin、R. J. G. Searle
DOI:10.1039/c39790000210
日期:——
The reaction of allylic bromides with bromoform and aqueous baseunderphasetransferconditions is strongly dependent on the catalyst; when benzyltriethylammonium chloride is used, the major primary product is a 4,4,4-tribromobut-1-ene.
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 phasetransfer catalyst structure on a branching of reaction paths is recorded. An almost complete change-over of mechanisms can be achieved. Reaction of allylbromide 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