The cationic Ir(I) complex [{Ir(bis(pyrazol-1-yl)methane)(CO) 2 }BPh 4 ] ( 1 ) catalyzes the hydroamination of 4-pentyn-1-amine to form 2-methylpyrroline and subsequent hydrosilation to form 1-(triethylsilyl)-2-methylpyrrolidine in a one-pot, tandem procedure in a short time frame and with essentially quantitative yields. The tandem transformation can also be achieved using the related Ir(I) complex [{Ir(bis(1-methylimidazol-2-yl)methane)(CO) 2 }BPh 4 ] ( 2 ) as catalyst.
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Field et al. (2003) studied this question.
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