M. Bartok et al., SUBSTITUENT EFFECT IN HYDROGENATIVE RING-OPENING OF CYCLOBUTANES ON PT SIO2/, Reaction kinetics and catalysis letters, 49(1), 1993, pp. 111-118
The main direction of hydrogenative ring-opening of propylcyclobutane
on Pt/SiO2 catalyst in the temperature interval of 373-673 K is the fo
rmation of n-heptane through cleavage of the sterically hindered C1-C2
bond. The unusual selectivity can be attributed to adsorption of both
the ring and the propyl group on the catalyst. With increasing temper
ature, the selectivity of ring-opening approaches the statistically ex
pected ratio.