Highly efficient Pd-catalyzed synthesis of nitriles from aldoximes
摘要:
An expedient method of Pd-catalyzed conversion of aldoxime into nitrile was developed. The reaction was carried out under the influence of Pd(OAc)(2)/PPh3 in refluxing CH3CN to provide good to high yields. The use of Cs2CO3 (0.1-0.5 equiv) was crucial in some cases. (C) 2009 Elsevier Ltd. All rights reserved.
Hantzsch; Lucas, Chemische Berichte, 1895, vol. 28, p. 746
作者:Hantzsch、Lucas
DOI:——
日期:——
Chiral ligand-controlled asymmetric conjugate amination of enoates with lithium mesitylmethyl(trimethylsilyl)amide
作者:Takeo Sakai、Hirohisa Doi、Kiyoshi Tomioka
DOI:10.1016/j.tet.2006.06.040
日期:2006.8
Lithium mesitylmethyl(trimethylsilyl)amide behaved as a nice amination agent in a chiral ligand-controlled conjugate addition reaction of tert-butyl cinnamate to give the conjugate amination product with 99% ee in 90% yield. Other acyclic and cyclic enoates were also aminated in reasonably high enantioselectivity, while the deprotonation of abstractable proton of enoates caused yield loss of the conjugate amination products, due to the bulkiness and enriched basicity of the lithium amide. Although such steric bulkiness made hard the hydrogenolytic cleavage of a mesitylmethyl-N bond of the adducts, a new protocol comprising N-chlorination-regioselective dehydro-chlorination-transoximation was developed for N-dearylmethylation, giving 3-aminoalkanoates in reasonably good yields. (c) 2006 Elsevier Ltd. All rights reserved.
Scholl; Kacer, Chemische Berichte, 1903, vol. 36, p. 330
作者:Scholl、Kacer
DOI:——
日期:——
US4670373A
申请人:——
公开号:US4670373A
公开(公告)日:1987-06-02
[EN] PROCESS FOR THE PREPARATION OF ORGANIC NITRILES<br/>[FR] PROCEDE DE PREPARATION DE NITRILES ORGANIQUES
申请人:ALLIEDSIGNAL INC.
公开号:WO1998005630A1
公开(公告)日:1998-02-12
(EN) The invention provides a process for the production of organic nitriles from the corresponding aldoxime. More particularly, the invention provides a process in which acid salts are used to convert an aldoxime to its corresponding nitrile, which process produces the nitrile in very high yield.(FR) L'invention a pour objet un procédé de production de nitriles organiques à partir de l'aldoxime corrélative. Plus particulièrement, l'invention porte sur un procédé qui permet d'utiliser des sels acides pour transformer une aldoxime en nitrile corrélative, et de produire ledit nitrile en très grandes quantités.