2-oxobicyclo[3.3.1]non-1-yl triflate gives the corresponding [3.3.1]-propellanone 2 in 15% yield. Primary factors involved in the reaction would be the marked electrophilicity of the destabilized 2-oxo bridgehead carbocation and stabilization of the cyclopropane ring of 2 by the π acceptor carbonyl group.
2-氧代双环[3.3.1]壬-1-基
三氟甲磺酸酯的
甲醇分解以15%的产率得到相应的[3.3.1]-
丙炔酮2。参与反应的主要因素是不稳定的2-氧代桥头碳正离子的显着亲电子性和通过π受体羰基对2的
环丙烷环的稳定作用。