Selective C-Acylation of 2-Aminoimidazo[1,2-<i>a</i>]pyridine: Application to the Synthesis of Imidazopyridine-Fused [1,3]Diazepinones
作者:Nicolas Masurier、Roberta Aruta、Vincent Gaumet、Séverine Denoyelle、Emmanuel Moreau、Vincent Lisowski、Jean Martinez、Ludovic T. Maillard
DOI:10.1021/jo300364d
日期:2012.4.6
2]imidazo[4,5-d][1,3]diazepin-5-ones which form a new family of azaheterocycle-fused [1,3]diazepines were synthesized in four steps with 17–66% overall yields. The key step consists of a selective C-acylation reaction of easily accessible 2-aminoimidazo[1,2-a]pyridine at C-3.
一系列20个光学纯的3,4-二氢-5 H-吡啶并[1',2':1,2]咪唑并[4,5- d ] [1,3]二氮杂-5-酮形成一个新家族分四步合成了氮杂杂环融合的[1,3]二氮杂ze,总产率为17-66%。关键步骤包括在C-3处容易获得的2-氨基咪唑并[1,2- a ]吡啶的选择性C-酰化反应。