将Mn(OAc)3促进的C-H的7-脱氮嘌呤(吡咯并[2,3膦酸化d ]嘧啶)和9-脱氮嘌呤(吡咯并[3,2- d ]嘧啶)与亚磷酸二乙酯的开发。该反应在7和9-脱氮嘌呤中的8位区域选择性地发生,产生新的脱氮嘌呤-8-膦酸酯衍生物,其可以被进一步修饰并转化为6-(杂)芳基-脱氮嘌呤衍生物或脱保护为游离膦酸。
A study of the Ir-catalyzed C-H silylation of 6-phenyl-7-deazapurines or -9-deazapurines with trialkylsilanes revealed that this reaction preferentially proceeded via ortho-silylation at the aryl group due to the directing effect of the N1 nitrogen of the deazapurine, rather than C-H silylation at the heterocycle which was only a minor side-reaction. A preparative protocol for the ortho-silylation of aryldeazapurines is. presented. (C) 2015 Elsevier Ltd. All rights reserved.