Syntheses and Reactivity of Analogues of Grubbs' Second Generation Metathesis Catalyst with Fluorous Phosphines: A New Phase??Transfer Strategy for Catalyst …
RC da Costa, JA Gladysz
Index: Da Costa, Rosenildo Correa; Gladysz, John A. Advanced Synthesis and Catalysis, 2007 , vol. 349, # 1-2 p. 243 - 254
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Citation Number: 50
Abstract
Abstract Reactions of the bis (pyridine) complex (H 2 IMes)(Py) 2 (Cl) 2 Ru (= CHPh),(H 2 IMes= 1, 3-dimesityl-4, 5-dihydroimidazol-2-ylidene) and the highly fluorophilic phosphines [R fn (CH 2) m] 3 P [1; m/n= a, 2/6; b, 2/8; c, 2/10; d, 3/8; R fn= CF 3 (CF 2) n− 1] give (H 2 IMes){[R fn (CH 2) m] 3 P}(Cl) 2 Ru (= CHPh)(4a–d, 64–78%), which are analogues of Grubbs' second generation alkene metathesis catalyst. Complexes 4a, b are effective ...
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