Regioselective Nucleophilic Alkylation/Arylation of B–H Bonds in <i>o</i>-Carboranes: An Alternative Method for Selective Cage Boron Functionalization
作者:Cen Tang、Jiji Zhang、Jie Zhang、Zuowei Xie
DOI:10.1021/jacs.8b10270
日期:2018.12.5
A new protocol for regioselective nucleophilic cage B-H substitution in o-carboranes has been proposed that is complementary to the strategies of transition metal catalysis and electrophilic substitution. Magnesium-mediated site-selective nucleophilic cage B(3,6)-H and B(9)-H substitution reactions of o-carboranes give a series of B(3,6)-dialkylated and B(9)-alkylated/arylated o-carboranes in high
A process for preparing a 2-cyanobiphenyl compound represented by the formula (II):
wherein R1 is an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or hydrogen atom, from a phenylmagnesium chloride compound represented by the formula (I):
wherein R1 is as defined above. According to the process, a 2-cyanobiphenyl compound represented by the formula (II) can be economically, simply, industrially and advantageously prepared.
Production method of 2-(p-alkylphenyl)pyridine compound
申请人:SUMIKA FINE CHEMICALS Co., Ltd.
公开号:EP0976736A1
公开(公告)日:2000-02-02
A method of producing a 2-(p-alkylphenyl)pyridine compound economically, easily and industrially, which comprises adding manganese dioxide and trimethylchlorosilane, or adding manganese chloride to an organic ether solvent, and reacting p-alkylphenylmagnesium halide and 2-halopyridine in the obtained organic ether solvent.