Selective construction of 2-substituted benzothiazoles from o-iodoaniline derivatives S8 and N-tosylhydrazone via a copper-promoted [3 + 1 + 1]-type cyclization reaction has been realized. In the protocol, the carbon atom on N-tosylhydrazone could be regulated to construct benzothiazole by changing the reaction system. Furthermore, the transformation has achieved the construction of multiple carbon-heteroatom
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
1]propellane with heteroaryl sulfones acting as difunctional reagents, allowing the introduction of alkyl and heteroaryl units across bicyclo[1.1.1]pentane frameworks. It features a broad substrate scope and can be used to functionalize structurally complex natural products. Mechanistic investigations indicate the Cs2CO3 promoted homolytic cleavage of heteroaryl sulfone C–S bonds by light. Moreover
在这项研究中,我们开发了[1.1.1]丙烷的光诱导双官能化,杂芳基砜作为双官能试剂,允许在双环[1.1.1]戊烷骨架上引入烷基和杂芳基单元。它具有广泛的底物范围,可用于功能化结构复杂的天然产物。机理研究表明Cs 2 CO 3通过光促进杂芳基砜C-S键的均裂。此外,产物中的苯并噻唑基部分可以充当甲酰基前体,这表明由于醛能够进行多种有机转化,因此产物具有强大的可转化性。