Efficient rhodium catalysts for the hydrogenolysis of thiophenic molecules in homogeneous phase

被引:37
作者
Bianchini, C [1 ]
Casares, JA [1 ]
Meli, A [1 ]
Sernau, V [1 ]
Vizza, F [1 ]
SanchezDelgado, RA [1 ]
机构
[1] INST VENEZOLANO INVEST CIENT,CARACAS 10020A,VENEZUELA
关键词
hydrodesulfurization; catalysis; thiophenes; rhodium; HPNMR spectroscopy;
D O I
10.1016/S0277-5387(96)00541-4
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
In the presence of strong bases, the C-S insertion complexes (triphos)Rh[eta(3)-S(C6H4)CH=CH2] and (triphos)Rh(eta(3)-SCH=CH CH=CH2) as well as the pi-alkyne complex [(triphos)Rh(eta(2)-MeO2CC=CCO2 Me)]PF6 are catalyst precursors for the hydrogenation of thiophene (T), benzo[b]thiophene (BT) and dibenzo[b,d]thiophene (DBT) in tetrahydrofuran solution [triphos = MeC(CH2PPh2)(3)]. Both hydrogenolysis (thiols) and desulfurization (hydrocarbons) products are obtained. Among the substrates investigated, BT is the most reactive, whereas T is the easiest to desulfurize. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:3099 / 3114
页数:16
相关论文
共 87 条