A new method for Madelung-type indole synthesis was investigated, and it was found that the amidation of 2-iodophenylacetonitrile with various alkanamides proceeds smoothly in the presence of CuI and a diamine ligand. The subsequent cyclization of the C-N coupling products takes place under the coupling reaction conditions.
POLYMER, RESIST COMPOSITION, AND PATTERN FORMING PROCESS
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20160229940A1
公开(公告)日:2016-08-11
A polymer comprising recurring units having an acid generator bound to the backbone, and recurring units having an optionally acid labile group-substituted carboxyl group and/or recurring units having an optionally acid labile group-substituted hydroxyl group is obtained by polymerizing corresponding monomers in a solution of a non-polymerizable compound containing a nitrogen atom to which an acid labile group is bound. This prevents deprotection reaction of the acid labile group in the case of positive resist-forming polymer or crosslinking reaction in the case of negative resist-forming polymer.
METHOD FOR PRODUCING POLYMER
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20170097567A1
公开(公告)日:2017-04-06
A polymer comprising recurring units having an acid generator bound to the backbone, and recurring units having an optionally acid labile group-substituted carboxyl group and/or recurring units having an optionally acid labile group-substituted hydroxyl group is obtained by polymerizing corresponding monomers in a solution of a non-polymerizable compound containing a nitrogen atom to which an acid labile group is bound. This prevents deprotection reaction of the acid labile group in the case of positive resist-forming polymer or crosslinking reaction in the case of negative resist-forming polymer.
Palladium-Catalyzed Oxidative Cyclization of Tertiary Enamines for Synthesis of 1,3,4-Trisubstituted Pyrroles and 1,3-Disubstituted Indoles
A novel and efficient palladium-catalyzed intramolecular oxidative cyclization of tertiary enamines for the synthesis of 1,3,4-trisubstituted pyrroles and 1,3-disubstituted indoles has been developed. Trifluoroacetic acid plays an important role in the reaction. A series of pyrroles and indoles with substitution patterns that are not easily accessible by traditional routes were synthesized in good
Enantioselective Dearomatization of Indoles via SmI<sub>2</sub>-Mediated Intermolecular Reductive Coupling with Ketones
作者:Wen-Yun Zhang、Hu-Chong Wang、Ye Wang、Chao Zheng、Shu-Li You
DOI:10.1021/jacs.3c01994
日期:2023.5.10
Samariumdiiodide (SmI2) mediated reductive coupling reactions are powerful methods for the construction of carbon–carbon bond in organic synthesis. Despite the extensive development in recent decades, successful examples of the corresponding asymmetric reactions remained scarce, probably due to the involvement of highly reactive radical intermediates. In this Article, we report an enantioselective