Domino Synthesis of Thiazolo-Fused Six- and Seven-Membered Nitrogen Heterocycles via Intramolecular Heteroannulation of In-Situ-Generated 2-(Het)aryl-4-amino-5-functionalized Thiazoles
作者:Yogendra Kumar、Hiriyakkanavar Ila
DOI:10.1021/acs.joc.2c01673
日期:2022.9.16
Synthesis of novel 2-(het)aryl-substituted thiazolo-fused six- and seven-membered heterocycles, such as thiazolo[4,5-b]pyridin-5(4H)-ones, thiazolo[4,5-c]isoquinolin-5(4H)-ones, thiazolo[4,5-b]quinolin-9(4H)-ones, 4H-benzo[e]thiazolo[4,5-b]azepine-5,10-diones, have been developed in a single-pot operation via intramolecular heteroannulation of in-situ-generated 2-(het)aryl-4-amino-5-functionalized
新型 2-(het) 芳基取代的噻唑并稠合六元和七元杂环化合物的合成,例如噻唑并[4,5 - b ]吡啶-5(4 H )-酮、噻唑并[4,5 - c ] isoquinolin-5(4 H )-ones, thiazolo[4,5- b ]quinolin-9(4 H )-ones, 4 H- benzo[ e ]thiazolo[4,5- b ]azepine-5,10-diones ,已通过原位生成的 2-(het)aryl-4-amino-5-functionalized 噻唑的分子内异环化在单锅操作中开发。这些 4-氨基-5-官能化噻唑很容易在一锅法中获得,方法是在 NaH 存在下用氰胺处理一系列(杂)芳基二硫酯,然后原位所得硫代亚胺酸盐与合适的活化二卤代甲烷的S-烷基化-分子内缩合。另一方面,相应的 4 H-苯并[ b ]噻唑并[4,5 - e ][1,4]diazepin-10(9