Table 1. Ti3–BPDC–CoH catalyzed cascade reduction of pyridines a .
a0.50 mmol pyridine, 0.525 mmol HBpin, 20 bar H2, 0.2–0.5 mol% of Ti3–BPDC–CoH, 100–140 °C, 22 h; yield determined by GC-MS using mesitylene as internal standard.
bReaction time: 40 h.
c1.05 equiv. HBpin, 35 bar H2.
d3 equiv. HBpin, 50 bar H2.
e3 equiv. HBpin, 35 bar H2.
f3-((Trimethylsilyl)ethynyl)pyridine as substrate, the triple bond was hydrogenated.