Benzylidene-Functionalized Ruthenium-Based Olefin Metathesis Catalysts for Ring-Opening Metathesis Polymerization in Organic and Aqueous Media
摘要:
New catalysts (PCy3)(2)Cl2Ru=CH(p-C6H4)CH2P(CH3)(3)Cl-+(-) (5) and (PCy3)(2)Cl2Ru=CH(p-C6H4)CH2-N(CH3)(2) (6) as well as the literature compound (PCy3)(2)Cl2Ru=CH(pC(6)H(4))N(CH3)(2) (7) have been synthesized via alkylidene exchange from Grubbs' catalyst in a one-step reaction. The catalysts promoted ROMP of the cationic exo-7-oxanorbornene derivative 11 under homogeneous conditions in various protic media including aqueous/alcoholic 1:1 mixtures, and in many cases, particularly for catalysts 5 and 6, the polymerizations proceeded in a controlled manner.
DOI:
10.1021/om700887t
作为产物:
描述:
、 4-氯甲基苯乙烯 、 三甲基膦 以
乙腈 为溶剂,
反应 2.0h,
以to afford the product 5b as a white solid (4.52 g, 97% yield)的产率得到氯化三甲基-(4-乙烯基苄基)鏻盐
参考文献:
名称:
POLYMER COATINGS THAT RESIST ADSORPTION OF PROTEINS
Improved antimicrobial adhesive copolymer compositions for wound closure or surgical-site closure are provided. The antimicrobial adhesive copolymer compositions comprise cyanoacrylate-based tissue adhesive monomers and long-chain quaternary ammonium compounds (QUATs), or long-chain quaternary phosphonium compounds (QUPTs). The antimicrobial adhesive copolymer compositions offer advantages in wound closure or surgical-site closure with bactericidal and bacteriostatic effects on Gram-positive and Gram-negative organisms.