Nickel N-Heterocyclic Carbene Catalyst for Cross-Coupling of Neopentyl Arenesulfonates with Methyl and Primary Alkyl Grignard Reagents
作者:Chul-Bae Kim、Hyunjong Jo、Bo-Kyoung Ahn、Chang Keun Kim、Kwangyong Park
DOI:10.1021/jo902151h
日期:2009.12.18
N-heterocyclic carbene (NHC) catalytic system prepared in situ by the reaction of Ni(acac)2 with NHC precursor efficiently catalyzed the cross-coupling reaction of alkoxysulfonylarenes with methyl, neopentyl, and benzyl Grignardreagents at ambient temperature.
Parallel and Combinatorial Liquid-Phase Synthesis of Alkylbiphenyls Using Pentaerythritol Support
作者:Wang-Kyu Kim、Jong-Hoon Jang、Hyunjong Jo、Kwangyong Park
DOI:10.1021/co400136k
日期:2014.5.12
Unfunctionalized alkylbiphenyls were fabricated by a parallel and combinatorial synthesisusing pentaerythritol as a tetrapodal soluble support for a sulfonate-based traceless multifunctional linker system. Nickel N-heterocyclic carbene-catalyzed reactions of pentaerythritol tetrakis(biphenylsulfonate)s with primary alkylmagnesium bromides generated the alkylbiphenyl derivatives by desulfitative c
Preparations and reactions of symmetrical dimethylenebiphenyl dianions; conformations of [O.n]-o-cyclophanes. A simple NMR method for determining twist angles in biphenyls
作者:Robert B. Bates、Fernando A. Camou、Vinayak Kane、Prasana K. Mishra、Kessara Suvannachut、James J. White