C. Botteghi et al., STUDY ON THE REGIOSELECTIVITY IN THE RHODIUM-CATALYZED HYDROFORMYLATION OF VINYL-PYRIDINE DERIVATIVES, Journal of molecular catalysis. A, Chemical, 118(2), 1997, pp. 173-179
1-alkyl- and 1-arylpyridylethenes were hydroformylated using rhodium c
atalysts in good yield, the regioselectivity the 1'-aryl-2-vinylpyridi
ne hydroformylation occurs with the exclusive formation of the more br
anched aldehyde, whereas in the case of aryl substituted 1'-aryl-4-vin
ylpyridine only the more linear aldehyde was detected, Attempts to rat
ionalize the results have been made.