A flexible synthesis of C-6 and N-1 analogues of a 4-amino-1,3-dihydroimidazo[4,5-c]pyridin-2-one core
作者:Duncan A. Hay、Fiona M. Adam、Gerwyn Bish、Frederick Calo、Rachel Dixon、M. Jonathan Fray、James Hitchin、Peter Jones、Michael Paradowski、Gemma C. Parsons、Katie J.W. Proctor、David C. Pryde、Nicholas N. Smith、Thien-Duc Tran
DOI:10.1016/j.tetlet.2011.08.119
日期:2011.11
A flexible route which enables access to derivatives of 4-amino-1,3-dihydroimidazo[4,5-c]pyridin-2-ones is described. Issues of selectivity, reaction safety, and low yields in original routes are overcome with the key improvements to the route, including a Negishi cross-coupling and use of a carbamate as a protecting group and intrinsic carbonyl source. The new route enables variation of C-6 and N-1
描述了一种灵活的途径,该途径使得能够获得4-氨基-1,3-二氢咪唑并[4,5 - c ]吡啶-2-酮的衍生物。原始路线的选择性,反应安全性和低收率问题可以通过对该路线的关键改进加以解决,包括Negishi交叉偶联以及使用氨基甲酸酯作为保护基团和固有的羰基来源。新的途径可以改变C-6和N-1取代基。