Add time:09/07/2019         Source:sciencedirect.com

Co(acac)x-Dppe-EtyAl2Cl6-y (x =2, 3; y=3,4) system promotes the codimerization of 2,5-Norbornadiene (cas 121-46-0) (1) with ethylene to give a mixture of 3-vinylnortricyclene (2), 5-vinyl-2-norbornene (3) and deltacyclane (4). A maximum turnover (C9/Co) of 46.3 for the codimers is achieved with the cobalt system. On Ni(acac)2-Dppe-EtyAl2Cl6-y, (y=2,3) system 1 and ethylene selectively codimerize to give 3 and 5-ethylidene-2-norbornene (5) in the temperature range −5 to −30°C in CH2Cl2 solvent. The influence of various solvents, ligands, Lewis acids and β-diketone ligands on yield and selectivity of the products are investigated. The maximum turnover of this catalyst system for the formation of codimer is 16.6. The probable mechanisms for formation of the products are delineated.

We also recommend Trading Suppliers and Manufacturers of 2,5-Norbornadiene (cas 121-46-0). Pls Click Website Link as below: cas 121-46-0 suppliers