[EN] PROCESS FOR HYDROCYANATION OF TERMINAL ALKYNES<br/>[FR] PROCÉDÉ D'HYDROCYANATION D'ALCYNES TERMINAUX
申请人:STUDIENGESELLSCHAFT KOHLE MBH
公开号:WO2018210631A1
公开(公告)日:2018-11-22
The present invention refers to a process for a Rh-catalyzed Anti-Markovnikov hydrocyanation of terminal alkynes which process discloses, for the first time, the highly stereo- and regio-selective hydrocyanation of terminal alkynes to furnish E- configured alkenyl nitriles and the catalyst used in the present process.
A heterogeneous fluoride catalyst was found to enable the straightforward formation of alkenyl nitriles from the reaction of aldehydes and simple or substituted acetonitriles, in the presence of commercially available silazanes and in solvent-free conditions. The protocol afforded the products in good to excellent yields with selectivity values dependent on the nature of the substrates. It represents
Stereospecific Oxycyanation of Alkenes with Sulfonyl Cyanide
作者:Kensuke Kiyokawa、Miu Ishizuka、Satoshi Minakata
DOI:10.1002/anie.202218743
日期:2023.3.13
Intermolecular oxycyanation of alkenes using p-toluenesulfonyl cyanide (TsCN) in the presence of tris(pentafluorophenyl)borane (B(C6F5)3) as a catalyst was shown to be feasible. The developed method offers a simple, scalable, and straightforward approach to access synthetically useful β-hydroxy nitrile derivatives.
在三(五氟苯基)硼烷(B(C 6 F 5)3 )作为催化剂存在下,使用对甲苯磺酰氰(TsCN)进行烯烃的分子间氧氰化被证明是可行的。开发的方法提供了一种简单、可扩展且直接的方法来获取合成有用的β-羟基腈衍生物。
Calcium receptor-active compounds
申请人:NPS PHARMACEUTICALS, INC.
公开号:EP1203761A2
公开(公告)日:2002-05-08
The present invention features compounds of general formulae a), b), c), able to modulate one or more activities of an inorganic ion receptor and methods for treating diseases or disorders by modulating inorganic ion receptor activity. Preferably, the compound can mimic or block the effect of extracellular Ca2+ on a calcium receptor.
The present invention refers to a process for a Rh-catalyzed Anti-Markovnikov hydrocyanation of terminal alkynes which process discloses, for the first time, the highly stereo- and regio-selective hydrocyanation of terminal alkynes to furnish E-configured alkenyl nitriles and the catalyst used in the present process.
本发明涉及一种在 Rh 催化下对末端炔烃进行反马尔科夫尼科夫加氢氰化反应的工艺,该工艺首次公开了对末端炔烃进行高度立体和区域选择性加氢氰化反应以生成 E 构型烯基腈化物的方法以及本工艺中使用的催化剂。