| 摘要 |
#CMT# #/CMT# Ruthenium complex (I), are new. #CMT# : #/CMT# Ruthenium complex of formula (I) are new. L : imidazolidine compound of formula (a) or 2,3-dihydro-1H-imidazole of formula (b); R : alkyl or aryl; either R 1>alkyl, perfluoroalkyl, aryl or ruthenium complex of formula (c); and R 2>alkyl, perfluoroalkyl or aryl; or R 1>, R 2>form a cycle. An independent claim is included for a molecule constituted by (I) substituted by an ionic unit. #CMT#[Image]#/CMT# #CMT#[Image]#/CMT# #CMT#USE : #/CMT# (I) is useful for the preparation of the molecules, as a catalyst for olefin metathesis (claimed). #CMT#ADVANTAGE : #/CMT# (I) allows a recycling of precatalyst, which is recovered in end of the reaction and can be reused. (I) reduces the charge in catalytic reaction metathesis (with out affecting yield), hence cost effective. (I) is non-toxic i.e. to minimize the presence of metallic waste in the reaction products. #CMT#ORGANIC CHEMISTRY : #/CMT# Preparation: No preparation method is given. Preferred Components: The molecule is an N-(2,2-dichloro-2,3-dihydro-benzofuran-5-yl)-2,2-difluoro-acetamide salt of formula (d) and (e). #CMT#[Image]#/CMT# #CMT#DEFINITIONS : #/CMT# Preferred Definitions: L : imidazolidine compound of formula (f); X : Cl; and R : CH 3, CF 3, C 6F 5 or pNO 2C 6H 4. #CMT#SPECIFIC COMPOUNDS : #/CMT# 3 Compounds (I) are specifically claimed e.g. ruthenium complex of formulae (Ia). #CMT#EXAMPLE : #/CMT# No suitable example given. |
