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.