A facile alkenylation of quinazolines with unactivated terminal alkynes has been achieved in the presence of KOtBu without the aid of any transition metal catalysts. The reaction is carried out under very mild conditions and shows a high stereoselectivity. A possible radical-based mechanism is also explored.
已在不使用任何过渡
金属催化剂的情况下,成功实现了在KOtBu存在下,采用未活化端炔对
喹唑啉进行易捷的烯基化反应。该反应在非常温和的条件下进行,并且显示出较高的立体选择性。还探讨了一种可能的基于自由基的机制。