Steuerung einer Reaktionsverzweigung durch geeignete Phasentransfer-Katalysatoren. Anwendungen der Phasentransfer-Katalyse 37.

Article abstract of DOI:10.1016/S0040-4039(00)96761-3

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 1 and displacement products 2 and 3.Two new and unusual catalysts, AsPh4Cl and Cl, give substitution:addition <*> 10:1, whereas NMe4Cl and benzo-15-crown-5 lead to <*> 1:4, both at high conversions.