Regioselectivity of Intermolecular Pauson–Khand Reaction of Aliphatic Alkynes: Experimental and Theoretical Study of the Effect of Alkyne Polarization

~80%

~75%

~86%

~91%

~71%

~74%

~81%

~75%

~64%

~55%

~9%

~94%

~66%

~49%

~62%

~82%