A catalyst consisting of Pd2(dba)3 + 2 XANTPhos (dba = dibenzylideneacetone, XANTPhos = 9,9-dimethyl-4,5-bis(diphenylphosphino) xanthene) in toluene catalyzes the alkoxycarbonylation of 4-penten-1-ol to form the cyclic products ε-caprolactone and 2-methylvalerolactone, as well as oligocaprolactone. The conversion and selectivity observed using this catalyst is higher than that observed with other reported systems with the regioselectivity for terminal carbonylation exceeding 70%.
All Science Journal Classification (ASJC) codes
- Process Chemistry and Technology
- Physical and Theoretical Chemistry