Synthesis of Benzo[4,5]imidazo[2,1-<i>b</i>
]thiazole by Copper(II)-Catalyzed Thioamination of Nitroalkene with 1<i>H</i>
-Benzo[<i>d</i>
]imidazole-2-thiol
作者:Sourav Jana、Amrita Chakraborty、Valerii Z. Shirinian、Alakananda Hajra
DOI:10.1002/adsc.201800393
日期:2018.6.15
A Copper(II)‐catalyzed thioamination of β‐nitroalkene with 1H‐benzo[d]imidazole‐2‐thiol has been developed for the synthesis of benzo[4,5]imidazo[2,1‐b]thiazole derivatives. A variety of N‐fused benzoimidazothiazole derivatives are obtained in high yields through successive C−N and C−S bond formations. This protocol is also applicable to β‐substituted β‐nitroalkenes to afford 2,3‐disubstituted benzoimidazothiazoles
已开发出一种铜(II)催化的β-硝基烯烃与1 H-苯并[ d ]咪唑-2-硫醇的硫胺化反应,用于合成苯并[4,5]咪唑并[2,1– b ]噻唑衍生物。通过连续的CN和CS键形成,可以高收率获得各种N稠合的苯并咪唑并噻唑衍生物。该方案也适用于β-取代的β-硝基烯烃,以提供2,3-二取代的苯并咪唑并噻唑。