Benzothiophene hydrogenation, homogeneous catalysts

Table 3.2. Homogeneous catalysts for the hydrogenation of benzothiophene. 78 Table 3.3. Homogeneous catalysts for the hydrogenation of N-heterocycles. 86...

Several heteroaromatic compounds can be hydrogenated by [Rh(COD) (PPh3)2]+ species. Thus, this cationic complex has been reported to be a catalyst precursor for the homogeneous hydrogenation of heteroaromatic compounds such as quinoline [32] or benzothiophene [33]. Detailed mechanistic cycles have been proposed by Sanchez-Delgado and coworkers. The mechanism of hydrogenation of benzothiophene by the cationic rhodium(III) complex, [Rh(C5Me5) (MeCN)3]2+, has been elucidated by Fish and coworkers [34]. 

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