Journal
GREEN CHEMISTRY
Volume 13, Issue 5, Pages 1143-1146Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1gc15134g
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan
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The solvent-free Horner-Wadsworth-Emmons reaction of triethyl phosphonoacetate with a variety of aldehydes was catalyzed by DBU in the presence of K2CO3 to give E-alpha, beta-unsaturated esters highly selectively (99 : 1 for most of the reactions). The reaction with ketones gave trisubstituted olefins with good to high E-selectivity by DBU-Cs2CO3.
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