Stereoselective Alkylations of Chiral Nitro Imine and Nitro Hydrazone Dianions. Synthesis of Enantiomerically Enriched 3-Substituted 1-Nitrocyclohexenes
作者:Scott E. Denmark*、Jeffrey J. Ares
DOI:10.1021/jo801790r
日期:2008.12.19
Dianions of chiral nitro imines (generated by a combination of LDA and s-BuLi) underwent diastereoselective alkylation with methyl, butyl, isopropyl, allyl, and methallyl iodides. In contrast to the behavior of simple metalloenamines, the most selective auxiliary contained no coordinating groups but did possess a large steric difference between the two substituents. The yield and selectivity of the
Martynoff, Bulletin de la Societe Chimique de France, 1958, p. 164,173
作者:Martynoff
DOI:——
日期:——
US4076830A
申请人:——
公开号:US4076830A
公开(公告)日:1978-02-28
Evaluating hydrogen bonding control in the diastereoselective Diels–Alder reactions of 9-(2-aminoethyl)-anthracene derivatives
作者:R. A. Bawa、F.-M. Gautier、H. Adams、A. J. H. M. Meijer、S. Jones
DOI:10.1039/c5ob01343g
日期:——
Hydrogen bonding can be used to control the stereoselectivity of the cycloaddition of some anthracene derivatives. DFT calculations provide support for the origins of the selectivity in these reactions.