ROCM reactions of exo- and endo-2-cyano-7-oxanorbornenes with allyl alcohol or allyl acetate promoted by different ruthenium alkylidene catalysts were studied. The stereochemical outcome of the reactions was established. The issues concerning chemo- (ROCM vs ROMP), regio- (1-2- vs 1-3-product formation), and stereo- (E/Z isomerism) selectivity of reactions under various conditions are discussed. Surprisingly
研究了不同的烷基亚烷基
钌催化剂促进的exo-和endo-2-cyano-7-oxanorbornebornenes与
烯丙醇或
乙酸烯丙酯的ROCM反应。确定了反应的立体
化学结果。讨论了在各种条件下反应的
化学反应(ROCM与ROMP),区域反应(1-2与1-3-产物形成)和立体反应(E / Z异构)的问题。在纯净条件下,ROCM产品的收率出乎意料地好。