Cobalt-Catalyzed Ortho Alkylation of Aromatic Imines with Primary and Secondary Alkyl Halides
作者:Ke Gao、Naohiko Yoshikai
DOI:10.1021/ja403759x
日期:2013.6.26
alkylation of aromatic imines with alkyl chlorides and bromides, which allows the introduction of a variety of primary and secondaryalkyl groups at room temperature. The stereochemical outcomes of the reaction of secondaryalkylhalides suggest that the present reaction involves single-electrontransfer from a cobalt species to the alkylhalide to generate the corresponding alkyl radical. A cycloalkylated
Cobalt-Catalyzed Chelation-Assisted Alkylation of Arenes with Primary and Secondary Alkyl Halides
作者:Naohiko Yoshikai、Ke Gao、Takeshi Yamakawa
DOI:10.1055/s-0033-1338658
日期:——
center to the alkylhalide to form the corresponding alkyl radical, which has a finite lifetime before it undergoes C–C bond formation. Cobalt–N-heterocyclic carbene catalytic systems have been developed for chelation-assisted ortho-alkylation of aromatic compounds with alkylhalides. Aryl imines can be selectively monoalkylated at room temperature by various primary or secondary alkyl chlorides or