High activity ruthenium or osmium metal carbene complexes for olefin metathesis reactions and synthesis thereof
申请人:CALIFORNIA INSTITUTE OF TECHNOLOGY
公开号:EP1251135A3
公开(公告)日:2004-01-02
A method of preparing a catalyst of the formula comprising:reacting a compound of the formula (XX1MLnL1m)p with a phosphorane of the formula wherein:M is Os or Ru;R and R1 are either the same or different and are(a) hydrogen,(b) a group selected from C2-C20 alkenyl, C2-C20 alkynyl, C1-C20 alkyl, aryl, C1-C20 carboxylate, C2-C20 alkoxy, C2-C20 alkenyloxy, C2-C20 alkynyloxy, aryloxy, C2-C20 alkoxycarbonyl, C1-C20 alkylthio, C1-C20 alkylsulfonyl, or C1-C20 alkylsulfinyl, or(c) one of the groups listed in (b) substituted with C1-C5 alkyl, halogen, C1-C5 alkoxy, unsubstituted phenyl, halogen substituted phenyl, C1-C5 alkyl substituted phenyl, or C1-C5 alkoxy substituted phenyl;R4, R5, and R6 are either the same or different and are each unsubstituted or substituted hydrocarbon wherein the hydrocarbon is selected from the group consisting of aryl, C1-C6 alkyl, C1-C6 alkoxy, and phenoxy and the hydrocarbon substitution is selected from the group consisting of halogen, C1-C3 alkyl, C1-C3 alkoxy, unsubstituted phenyl, halogen substituted phenyl, C1-C5 alkyl substituted phenyl, and C1-C5 alkoxy substituted phenyl;X and X1 are either the same or different and are any anionic ligand;L is any neutral electron donor;L1 is a trialkylphosphine ligand where at least one of the alkyl groups is a secondary alkyl or a cycloalkyl;n and m are independently 0-4, provided n+m=2, 3 or 4; andp is an integer equal to or greater than 1.
制备配方催化剂的方法包括:将具有以下配方的化合物(XX1MLnL1m)与具有以下配方的磷烷反应:其中:M为Os或Ru;R和R1要么相同要么不同,且为(a) 氢,(b) 从C2-C20烯烃、C2-C20炔烃、C1-C20烷基、芳基、C1-C20羧酸酯、C2-C20烷氧基、C2-C20烯氧基、C2-C20炔氧基、芳氧基、C2-C20烷氧羰基、C1-C20烷硫基、C1-C20烷基磺酰基或C1-C20烷基亚磺酰基中选择的基团,或(c) 在(b)中列出的基团之一,其被C1-C5烷基、卤素、C1-C5烷氧基、未取代的苯基、卤素取代的苯基、C1-C5烷基取代的苯基或C1-C5烷氧基取代的苯基所取代;R4、R5和R6要么相同要么不同,且每个都是未取代或取代的碳氢化合物,其中碳氢化合物选自芳基、C1-C6烷基、C1-C6烷氧基和苯氧基组成的群,碳氢化合物取代选自卤素、C1-C3烷基、C1-C3烷氧基、未取代的苯基、卤素取代的苯基、C1-C5烷基取代的苯基和C1-C5烷氧基取代的苯基;X和X1要么相同要么不同,且为任何阴离子配体;L为任何中性电子给体;L1为三烷基膦配体,其中至少一个烷基是次烷基或环烷基;n和m独立地为0-4,条件是n+m=2、3或4;p为大于或等于1的整数。