BERLAN J.; BESACE Y., TETRAHEDRON, 42,(1986) N 17, 4767-4776
作者:BERLAN J.、 BESACE Y.
DOI:——
日期:——
Tandem Formation and [2,3] Rearrangement of Methylene Ammonium Ylides Derived from Amines and the Simmons−Smith Reagent
作者:Varinder K. Aggarwal、Guang yu Fang、Jonathan P. H. Charmant、Graham Meek
DOI:10.1021/ol034404i
日期:2003.5.1
[reaction: see text] Zinc-complexed methylene ammoniumylides are formed from tertiary amines and the Simmons-Smith reagent. These stable entities can be activated with n-BuLi to allow reactions typical of ammoniumylides such as [2,3] rearrangements. In the case of oxazolidine 12, ylide formation, activation, and subsequent [2,3] rearrangement was highly efficient and occurred with very high diastereoselectivity