Dehydrogenative alkenylation of imidazo[2,1-b]thiazoles via palladium(II)-catalyzed site-selective CH bond activation has been developed in moderate to good yields under aerobic conditions. This methodology provides a very efficient, direct, and atomeconomical strategies to construct an alkenyl-imidazo[2,1-b]thiazole moiety.
咪唑并[2,1- b ]噻唑经钯(II)催化的位点选择性C H键活化脱氢烯基化反应在需氧条件下以中等至良好的收率得到了发展。该方法学提供了一种非常有效,直接和经济的方法来构建烯基-咪唑并[2,1- b ]噻唑部分。
3-AZA-BICYCLO[3.1.0]HEXANE DERIVATIVES
申请人:Aissaoui Hamed
公开号:US20100016401A1
公开(公告)日:2010-01-21
The invention relates to 3-aza-bicyclo[3.1.0]hexane derivatives of formula (I) wherein A, B, n, X, and R
1
are as described in the description, and salts thereof, and their use as orexin receptor antagonists.
Direct arylation of imidazo[2,1-<i>b</i>]thiazoles and thiazoles with aryl iodides via CuCl<sub>2</sub>/PPh<sub>3</sub>-catalyzed C-H bond functionalization
Regioselective palladium-catalyzed phosphonation of imidazo[2,1-b]thiazoles with dialkyl phosphites
作者:Wenjie Liu、Shaohua Wang、Huagang Yao、Ziying Li、Yanling Huang、Chunyun Kong
DOI:10.1016/j.tetlet.2015.09.078
日期:2015.10
A novel and facile Pd-catalyzed direct phosphonation of imidazo[2,1-b]thiazoles with dialkyl phosphites has been developed to give the corresponding C-5 phosphonated products in moderate to good yields with high regioselectivity.
Revised Structures, 1-Methylene-1H-[1,4]thiazino[4,3-a]benzimidazole and 10-Methylene-10H-imidazo[2,1-c][1,4]benzothiazine Derivatives, for the Cycloadducts Accompanying Rearrangement from Imidazo[2,1-b]benzothiazole and Thiazolo[3,2-a]benzimidazole Derivatives with Propiolic Esters
structures, thiazolo[3,2-a][1,5]benzodiazepine and [1,4]diazepino[7,1-b]benzothiazole derivatives, cycloadducts from the reactions of thiazolo[3,2-a]benzimidazole and imidazo[2,1-b]benzothiazole derivatives with propiolic esters, are revised to methyl 2-[4-methyl-(E)-1H-[1,4]thiazino[4,3-a]benzimidazol-1-ylidene)methoxycarbonylmethyl]-(E)-acrylate and methyl [2-methyl-(E)-10H-imidazo[2,1-c][1,4]benzoth
先前提出的结构,噻唑并[3,2-a][1,5]苯二氮卓和[1,4]二氮杂[7,1-b]苯并噻唑衍生物,噻唑并[3,2-a]苯并咪唑反应的环加合物和咪唑并[2,1-b]苯并噻唑衍生物与丙炔酸酯,被修改为甲基2-[4-甲基-(E)-1H-[1,4]噻嗪并[4,3-a]苯并咪唑-1-亚基)甲氧基羰基甲基]-(E)-丙烯酸甲酯和[2-甲基-(E)-10H-咪唑并[2,1-c][1,4]苯并噻嗪-10-亚基)-甲氧基羰基甲基]-(E)-丙烯酸甲酯,分别通过 X 射线结构分析推导出其结构。