The reactions described provide a facile and efficient access to cycloalkenyl phosphonates with good to excellent yields via Diels–Alder cycloadditions between alkynyl phosphonates and 1,3-dienes under catalyst-free conditions.
所描述的反应提供了一种简便高效的方法,通过催化剂自由条件下,使炔基膦酸酯和1,3-双烯之间的Diels-Alder环加成反应,获得良好至优异的收率,制备环烯基膦酸酯。