A one-pot, convenient and practical method for N-acylation of 2-oxazolidinone chiral auxiliaries directly with acids in the presence of pivaloyl chloride and triethylamine is described.
描述了一种在新戊酰氯和三乙胺存在下用酸直接将2-恶唑烷酮手性助剂进行N-酰化的一锅法,方便实用。
Hydroxamic acid derivatives of aniline useful as therapeutic agents for treating anthrax poisoning
申请人:Johnson Alan T.
公开号:US20120157462A1
公开(公告)日:2012-06-21
Compounds having the formula
wherein the symbols have the meaning described in the specification are hydroxamic acid derivatives of aniline and capable of inhibiting the lethal effects of infection by anthrax bacteria and are useful in the treatment of poisoning by anthrax.
Conformational control in the SuperQuat chiral auxiliary 5,5-dimethyl-4-iso-propyloxazolidin-2-one induces the iso-propyl group to mimic a tert-butyl group
作者:Steven D. Bull、Stephen G. Davies、Min-Suk Key、Rebecca L. Nicholson、Edward D. Savory
DOI:10.1039/b005419o
日期:——
1
H NMR nOe spectroscopic studies reveal that
conformational control in the enolates of
N-acyl-5,5-dimethyl-4-iso-propyloxazolidin-2-ones ensures
that the stereodirecting effect of its 4-iso-propyl-5,5-dimethyl
functional group affords superior levels of facial selectivity normally
associated with enolates derived from
N-acyl-4-tert-butyloxazolidin-2-ones.
1 H NMR nOe 光谱研究表明,N-酰基-5,5-二甲基-4-异丙基恶唑啉-2-酮烯醇盐的构象控制确保了其 4-异丙基-5,5-二甲基官能团的立体定向效应,从而提供了通常与 N-酰基-4-叔丁基恶唑啉-2-酮烯醇盐相关的卓越的面部选择性。
Oxidation of enolates by dibenzyl peroxydicarbonate to carbonates of .alpha.-hydroxy carbonyl compounds
作者:Makarand P. Gore、John C. Vederas
DOI:10.1021/jo00369a027
日期:1986.9
GORE M. P.; VEDERAS J. C., J. ORG. CHEM., 51,(1986) N 19, 3700-3704