Copper(I)-Catalyzed Ketone, Amine, and Alkyne Coupling for the Synthesis of 2-Alkynylpyrrolidines and -piperidines
作者:Wim E. Van Beek、Joren Van Stappen、Philippe Franck、Kourosch Abbaspour Tehrani
DOI:10.1021/acs.orglett.6b02127
日期:2016.10.7
A Cu(I)-catalyzed coupling of a ω-chloro ketone, a primary amine, and an alkyne is described. This protocol allows for the synthesis of α-quaternary carbons in 2-alkynyl-substituted N-heterocycles. The keystep is the in situ generation of a cyclic ketiminium species, which has enhanced reactivity for alkynylation compared to acyclic ketiminium species.
Intramolecular Assistance of Decarboxylative Acylation
作者:Philip A. Cruickshank、John C. Sheehan
DOI:10.1021/ja01474a024
日期:1961.7
Design and evaluation of switchable-hydrophilicity solvents
作者:Jesse R. Vanderveen、Jeremy Durelle、Philip G. Jessop
DOI:10.1039/c3gc42164c
日期:——
Switchable-hydrophilicity solvents (SHS) can switch reversibly between one form that is miscible with water and another that forms a biphasic mixture with water. New examples are reported and compared in terms of safety and environmental impact.