已经开发出在催化量的偶氮二(异丁腈)作为自由基引发剂的存在下,二炔和硫代乙酸的单步分子内自由基级联反应以合成噻吩。该方法允许容易且有效地构建具有3,4-稠环取代和未取代的2,5-位的噻吩支架,用于进一步的官能化和聚合。使用该方法,合成了环戊[ c ]噻吩,3,4-乙撑二氧噻吩和含噻吩的螺环化合物的衍生物。
2-substituted indane-2-mercaptoacetylamide derivatives useful as
申请人:Merrell Dow Pharmaceuticals Inc.
公开号:US05428158A1
公开(公告)日:1995-06-27
The present invention relates to novel 2-substituted indane-2-mercaptoacetylamide derivatives which are useful as inhibitors of enkephalinase and ACE.
本发明涉及新型的2-取代的茚-2-巯基乙酰胺衍生物,可用作脑啡肽酶和ACE的抑制剂。
Indane-2-mercaptoacetylamide disulfide derivatives useful as inhibitors
申请人:Merrell Pharmaceuticals Inc.
公开号:US05604221A1
公开(公告)日:1997-02-18
The present invention relates to certain novel indane-2-mercaptoacetylamide disulfide derivatives of the formula ##STR1## useful as inhibitors of enkephalinase.
2-substituted indane-2-carboxyalkyl derivatives useful as inhibitors of
申请人:Merrell Dow Pharmaceuticals Inc.
公开号:US05457196A1
公开(公告)日:1995-10-10
The present invention relates to novel 2-substituted indane-2-carboxyalkyl derivatives useful as inhibitors of enkephalinase and ACE.
本发明涉及新颖的2-取代茚满-2-羧基烷基衍生物,其作为脑啡肽酶和ACE抑制剂有效。
Radical-Cascade Avenue for 3,4-Fused-Ring-Substituted Thiophenes
作者:Abhijeet R. Agrawal、Neha Rani Kumar、Sashi Debnath、Sarasija Das、Chandan Kumar、Sanjio S. Zade
DOI:10.1021/acs.orglett.8b01577
日期:2018.8.17
A single-step intramolecular radical cascade reaction of diynes and thioacetic acid in the presence of a catalytic amount of azobis(isobutyronitrile) as a radical initiator has been developed to synthesize thiophenes. This method allows easy and effective construction of a thiophene scaffold having 3,4-fused-ring substitution and unsubstituted 2,5-positions for further functionalization and polymerization
已经开发出在催化量的偶氮二(异丁腈)作为自由基引发剂的存在下,二炔和硫代乙酸的单步分子内自由基级联反应以合成噻吩。该方法允许容易且有效地构建具有3,4-稠环取代和未取代的2,5-位的噻吩支架,用于进一步的官能化和聚合。使用该方法,合成了环戊[ c ]噻吩,3,4-乙撑二氧噻吩和含噻吩的螺环化合物的衍生物。
Copper and Silver Catalysis in the (3 + 2) Cycloaddition of Neutral Three-Atom Components with Terminal Alkynes
place with terminal alkynes. Herein, we report that comparable rate enhancements, in nature and level, are induced by copper and silver catalysts in the intramolecular (3 + 2) cycloaddition of terminal alkynes with “neutral” three-atom components (TACs), specifically alkynyl sulfides. Through careful observations amidst reaction optimization, experimental, and DFTmechanisticstudies, a pathway involving