1.Recent advances in ring closing metathesis (RCM) reaction, including olefin and enyne metathesis reaction are reviewed.

1.综述近几年来关环复分解(RCM)反的研新进展,包括烯烃、烯-的RCM反。

2.In this thesis, the carbozincation of acetylenic sulfones and its applications in the stereoselective synthesis of polysubstituted olefins were investigated.

2.本论文研基砜的锌化反原位产生的α-磺酰基烯基锌试剂在立体选择性合成多取代烯烃中的用。

3.The diolefins and alkenyl aromatics are very unstable components which can give gums by polymerization.In giving olefins and alky aromatics the hydrogenation improves the product quality.

3.二烯烃和烯基芳烃是非常不稳定的组分，可聚合产生凝胶。对于给定烯烃和烷基芳烃，氢化可以改善产品质量。