摘要 : Diazoalkane complexes [Ru(η~5-C_5H_5)(N_2CAr1Ar2)(PPh_3)L]BPh_4 (1, 2; Ar1 = Ph, Ar2 = p-tolyl; Ar1Ar2 = C_(12)H_8; L = P(OMe)_3, P(OEt)_3) were prepared by allowing compounds RuCl(η~5-C_5H_5)(PPh_3)L to react with diazoalkane in ... 展开 Diazoalkane complexes [Ru(η~5-C_5H_5)(N_2CAr1Ar2)(PPh_3)L]BPh_4 (1, 2; Ar1 = Ph, Ar2 = p-tolyl; Ar1Ar2 = C_(12)H_8; L = P(OMe)_3, P(OEt)_3) were prepared by allowing compounds RuCl(η~5-C_5H_5)(PPh_3)L to react with diazoalkane in ethanol. Treatment of complexes 1 and 2 with ethylene under mild conditions (1 atm, room temperature) led not only to the ethylene complexes [Ru(η~5-C_5H_5)(η~2-CH_2=CH_2)(PPh_3)L]BPh_4 (5, 6) but also to dipolar (3 + 2) cycloaddition, affording the 3H-pyrazole derivatives [Ru(η~5-C_5H_5){η~1-N=NC(Ar1Ar2) CH_2CH_2}(PPh_3)L]BPh_4 (3, 4). The propylene complexes [Ru(η~5-C_5H_5) (η~2-CH_3CH=CH_2)(PPh_3)L]BPh_4 (7, 8) were also prepared. The compounds were characterized by spectroscopy and by X-ray crystal structure determinations of 2a, 3b, and 7. 收起