A new method of ortho-fluorination where an aryl C—H bond is directly replaced by an aryl C-F bond in a palladium-catalyzed reaction is provided. The method includes the ortho-fluorination of a triflamide protected benzylamine, a palladium catalyst, such as Pd(OTf)
2
, a fluorinating reagent such as N-fluoro-2,4,6-trimethylpyridinium triflate, and a ligand to promote the reaction such as N-methylpyrrolidinone (NMP).
Rh(III)-catalyzed<i>ortho</i>-Alkylation of<i>N</i>-Benzyltriflamides with Diazo Compounds
作者:Sang Hoon Han、Neeraj Kumar Mishra、In Su Kim
DOI:10.1002/bkcs.10574
日期:2015.12
The rhodium(III)‐catalyzed ortho‐CH functionalization of N‐benzyltriflamides with α‐diazocompounds is described. This transformation provides the facile construction of C2‐alkylated N‐benzyltriflamides in the absence of external oxidants under mild reaction conditions.
ONIUM SALT, CHEMICALLY AMPLIFIED RESIST COMPOSITION AND PATTERNING PROCESS
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20220127225A1
公开(公告)日:2022-04-28
An onium salt having formula (1) serving as an acid diffusion inhibitor and a chemically amplified resist composition comprising the acid diffusion inhibitor are provided. When processed by lithography, the resist composition forms a pattern having minimal defects and excellent lithography performance factors such as CDU, LWR and DOF.
cyclization via C(sp2)–H activation with a cooperative catalytic system consisting of a Cp*Rh(III) complex and a chiral Lewis base is described. An α,β-unsaturated acyl ammonium intermediate is generated from a chiral isochalcogenurea catalyst and an acyl fluoride reacts with a metallacycle generated from the Cp*Rh catalyst and a benzylamine derivative. This cooperative catalytic system gives a variety