An Efficient Synthesis of Tetracyclic Pyrano[2,3-<i>d</i>]pyrimidines
作者:Zhi-Lan Lin、Jun-Min Zhang、Yuan Gao
DOI:10.1002/jhet.2630
日期:2017.1
A series of pyrano[2,3‐d]pyrimidine derivatives have been synthesized by the reaction of 2‐amino‐3‐cyano‐4H‐pyrans and acetic anhydride with acid catalyst . This method is very efficient because of short reaction times and easy work‐up, and it provides an efficient and promising synthetic strategy for the construction of the tetracyclic pyrano[2,3‐d]pyrimidine skeleton. The X‐ray crystal structures
通过2-氨基-3-氰基-4- H-吡喃与乙酸酐与酸催化剂的反应合成了一系列吡喃并[2,3- d ]嘧啶衍生物。该方法由于反应时间短且易于后处理而非常有效,并且为构建四环吡喃并[2,3- d ]嘧啶骨架提供了有效而有前途的合成策略。确认了产品的X射线晶体结构,并提供了可能的机理。