Rhodium-catalyzed synthesis of unsymmetrical di(aryl/heteroaryl)methanes using aryl/heteroarylmethyl ketones via CO–C bond cleavage
作者:Guangzhe Li、Mieko Arisawa、Masahiko Yamaguchi
DOI:10.1039/c4cc00816b
日期:——
RhH(PPh3)4 and 1,2-bis(diphenylphosphino)benzene catalyze the reaction of aryl/heteroarylmethyl ketones and arylheteroaryl ethers giving unsymmetrical diarylmethanes containing one or two heteroarenes in high yields. The reaction does not use alkali metal bases, and therefore does not form large amounts of metal waste.
Manganese‐Mediated Reductive Alkylation of Thiazolyl‐Phosphonium Salts
作者:Mengwan Yang、Jiaxi Fang、Huan Liu、Xinyao Lu、Jiawen Zhou、Zehuai Mou、Huifei Wang
DOI:10.1002/adsc.202300159
日期:2023.6.13
Reductive functionalization reactions between two electrophiles is a straightforward protocol to access carbon-carbon bonds without use of organometallic reagents prepared in advance. Here, we developed a manganese-mediated reductivealkylation of heterocyclic thiazolyl-phosphonium salts with benzyl bromides to form C2-alkylated benzothiazoles. The reaction features a broad substrate scope, high-functional-group