and accelerate initiation through steric hindrance, was prepared by the reaction of (H2IMes)(PPh3)(Cl)2RuCHPh (1) with 2-methylpyridine and proved to exhibit enhanced catalytic activity for cyano-contained olefin metathesis.
钌亚苄基络合物(H 2 I
MES)(2-CH 3 –C 5 H 4 N)(Cl)2 RuCHPh [H 2 I
MES = 1,3-双(2,6-二甲基苯基)-4,5-二氢
咪唑-2 -亚基](4),其引入邻取代的
吡啶作为
配体解离以削弱的Ru-N键,并通过空间位阻加速启动,通过反应制备(H 2 I
MES)(PPH 3)(CL)2 RuCHPh(1)与2-
甲基吡啶反应,并证明对
氰基含烯烃的复分解反应具有增强的催化活性。