已经开发了一种方便有效的取代的2,3-二氢噻吩并[3,2- c ]吡啶-4(5 H)-one的合成方法,该方法依赖于二甲基氨基丙烯酰基Lawesson试剂引发的环丙烷。一种机制,涉及区域选择性硫磺化,环扩大和分子内氮杂提出了环化顺序。该协议被用作通向噻吩并[3,2 - c ]吡啶-4-4 (5 H)-的一锅法。DDQ 作为氧化剂。
Lawesson's reagent-initiated domino reaction of aminopropenoyl cyclopropanes: synthesis of thieno[3,2-c]pyridinones
作者:Peng Huang、Rui Zhang、Yongjiu Liang、Dewen Dong
DOI:10.1039/c2ob06709a
日期:——
substituted 2,3-dihydrothieno[3,2-c]pyridin-4(5H)-ones has been developed and relies upon a dominoreaction of dimethylaminopropenoyl cyclopropanes initiated by Lawesson's reagent. A mechanism involving regioselective thionation, ring-enlargement, and an intramolecular aza-cyclization sequence is proposed. This protocol was utilized as a one-pot route to thieno[3,2-c]pyridin-4(5H)-ones with DDQ as an oxidant
已经开发了一种方便有效的取代的2,3-二氢噻吩并[3,2- c ]吡啶-4(5 H)-one的合成方法,该方法依赖于二甲基氨基丙烯酰基Lawesson试剂引发的环丙烷。一种机制,涉及区域选择性硫磺化,环扩大和分子内氮杂提出了环化顺序。该协议被用作通向噻吩并[3,2 - c ]吡啶-4-4 (5 H)-的一锅法。DDQ 作为氧化剂。