曙红Y / K 2 S 2 O 8在可见光下催化了苯并噻唑与N,N-二甲基酰胺的C2-烷基化反应。在空气中无溶剂的条件下,在曙红Y作为光催化剂和K 2 S 2 O 8作为氧化剂的条件下,反应可以顺利完成。这种绿色且简单的方法为苯并噻唑的C2-烷基化合成提供了另一种途径,并且可以耐受许多官能团,从而提供中等至极好的收率。
Transition Metal-Free Amidoalkylation of Benzothiazoles and Amidoalkylarylation of Activated Alkenes with <i>N</i>,<i>N</i>-Dialkylamides
作者:Jian Wang、Jing Li、Jinbo Huang、Qiang Zhu
DOI:10.1021/acs.joc.6b00096
日期:2016.4.1
benzothiazoles and N-aryl-N-methyl-methacrylamides as substrates, respectively. The transformation proceeded smoothly through amidoalkyl radical intermediates that were trapped by benzothiazoles or activatedalkenes.
The direct α‐heteroarylation of alkylamides through a radical chain mechanism involving homolytic aromatic substitution (HAS) was accomplished using methanesulfonylheteroarenes and t‐BuON=NOt‐Bu as arylating reagents and a tert‐butoxy radical precursor, respectively.