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Indexed by:期刊论文

Date of Publication:2000-01-01

Journal:Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities

Included Journals:Scopus、PKU

Volume:21

Issue:6

Page Number:897-

ISSN No.:02510790

Abstract:Ru3(CO)9(TPPTS)3 was used in the selective reduction of aromatic nitro compounds under CO atmosphere in water/organic biphase system. It was found that the reaction was accelerated obviously by phase-transfer catalysts and the cetyltrimethylammonium bromide(CTAB) is the best one among them. Using o-ClC6H4NO2 as a reactant, the influences of the concentration of CTAB, the concentration of NaOH, reaction temperature and CO pressure on the catalytic properties of Ru3(CO)9(TPPTS)3 were studied. Under the conditions of 120  C, pco = 4 MPa, 3 mol/L NaOH, 8 h, both the conversions of o-ClC6H4NO2 and the selectivity of o-ClC6H4NH2 were 99.9%. The reductions proceeded with a markable activity and selectivity toward aromatic nitro group as C = O, C = N groups present in the substrate. After 3 times recycle of the catalyst the conversion of o-ClC6H4NO2 and the yield of o-ClC6H4NH2 were more than 92%.