One-step conversion of esters to acyl azides using diethylaluminum azide
作者:Viresh H. Rawal、Hua M. Zhong
DOI:10.1016/s0040-4039(00)73289-8
日期:1994.7
Diethylaluminum azide, prepared from either sodium azide and diethylaluminum chloride or hydrazoic acid and triethylaluminum, reacts with esters to yield acyl azides in one step.
A versatile way for the synthesis of monomethylamines by reduction of <i>N</i>-substituted carbonylimidazoles with the NaBH<sub>4</sub>/I<sub>2</sub> system
作者:Lin Chen、Xuan Zhou、Zhiyong Chen、Changxu Wang、Shunjie Wang、Hanbing Teng
DOI:10.3762/bjoc.18.104
日期:——
yields from a wide range of raw materials including amines (primaryamines and secondaryamines), carboxylic acids and isocyanates. Besides, an interesting reduction selectivity was observed. Exploration of the reaction process shows that it undergoes a two-step pathway via a formamide intermediate and the reduction of the formamide intermediate to monomethylamine as the rate-determining step. This
A filter and a process for the preparation thereof
申请人:New York Blood Center, Inc.
公开号:EP0085166A1
公开(公告)日:1983-08-10
There is disclosed a filter comprising fibrin in gel form, the gel having substantially uniform pore sizes, and the filter comprising means for retaining the shape of at least one surface of the gel against deformation when contacted by a flowing medium.