作者:Morten Brændvang、Lise-Lotte Gundersen
DOI:10.1016/j.tetlet.2007.02.116
日期:2007.4
of 4-chloropyrazolo[3,4-d]pyrimidine can be achieved when the heterocycle is reacted with alcohols under Mitsunobu conditions. The 1-alkyl-pyrazolo[3,4-d]pyrimidines formed can be functionalized further according to known methods, to give a variety of 1,4-disubstituted pyrazolo[3,4-d]pyrimidines. The first example of a palladium-catalyzed coupling reaction on a 4-halopyrazolo[3,4-d]pyrimidine is described
当杂环在Mitsunobu条件下与醇反应时,可以实现4-氯吡唑并[3,4- d ]嘧啶的高效和N-1选择性烷基化。形成的1-烷基-吡唑并[3,4- d ]嘧啶可以根据已知方法进一步官能化,得到各种1,4-二取代的吡唑并[3,4- d ]嘧啶。描述了在4-卤代吡唑并[3,4- d ]嘧啶上钯催化的偶联反应的第一个例子。