One-pot synthesis of 4(3H)-quinazolinones from azides, alkynes, anilines, and carbon monoxide
作者:Yang Shen、Chao Han、Shuying Cai、Ping Lu、Yanguang Wang
DOI:10.1016/j.tetlet.2012.08.045
日期:2012.10
A one-potsynthesis of 4(3H)-quinazolinones from terminal alkynes, sulphonyl azide, o-iodoanilines, and carbon monoxide has been developed. This cascade process includes the copper-catalyzed three-component reaction of alkyne, azide and amine, the palladium-catalyzed carbonylation, and the Lewis acid catalyzed hydrolysis of sulfonamide.
[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.
Rh-Catalyzed Anti-Markovnikov Hydrocyanation of Terminal Alkynes
作者:Fei Ye、Junting Chen、Tobias Ritter
DOI:10.1021/jacs.7b03749
日期:2017.5.31
We report the first highly stereo- and regioselective hydrocyanation of terminal alkynes to furnish E-configured alkenyl nitriles. Acrylonitriles can be accessed on gram scale with broad substrate scope and functional group tolerance. The hydrocyanation reaction employs acetone cyanohydrin as a practical alternative to HCN gas.
我们报告了第一个高度立体和区域选择性的末端炔烃氢氰化反应,以提供 E 构型的烯基腈。丙烯腈可以在克级获得,具有广泛的底物范围和官能团耐受性。氢氰化反应使用丙酮氰醇作为 HCN 气体的实用替代品。
Efficient One-Pot Multifunctionalization of Alkynes en Route to α-Alkoxyketones, α-Thioketones, and α-Thio Thioketals by using an Umpolung Strategy
作者:Zhou Xu、Rongliang Zhai、Ting Liang、Liming Zhang
DOI:10.1002/chem.201703087
日期:2017.10.12
All topsy turvy: A new and broadly applicable method for the synthesis of unique α-oxygenated ketones, α-thio ketones and α-thio thioketals via umpolung reaction of nucleophiles-alcohols/thioalcohols and N-alkenoxypyridinium salts generated from alkynes in a one-pot manner is reported for the first time. The reaction is controllable and tunable with good substrates scope (46 examples) and excellent
α-Amino Aldehydes as Readily Available Chiral Aldehydes for Rh-Catalyzed Alkyne Hydroacylation
作者:Joel F. Hooper、Sangwon Seo、Fiona R. Truscott、James D. Neuhaus、Michael C. Willis
DOI:10.1021/jacs.5b11892
日期:2016.2.10
stereospecificity. Amino aldehydes derived from glycine, alanine, valine, leucine, phenylalanine, isoleucine, serine, tryptophan, methionine, and cysteine were successfully employed, as was an enantiomerically enriched α-OMTM-aldehyde derived from phenyllactic acid. The synthetic utility of the α-amino enone products is demonstrated in a short enantioselective synthesis of the natural product sphingosine.