| Literature DB >> 18351770 |
Yu Liu1, Yu Zhang, Noel Jee, Michael P Doyle.
Abstract
Functionalized diazo acetoacetates are prepared by an efficient Mukaiyama-Michael reaction between methyl 3-(trialkylsilanoxy)-2-diazo-3-butenoate and alpha,beta-unsaturated enones. Vinyl ether and ketone derivatives are both accessible in good to excellent yield through this methodology. The mild Lewis acid zinc(II) triflate is the optimal catalyst, and its loading can be as low as 0.1 mol %. In addition, zinc triflate was also found to be a superior catalyst for the related Mukaiyama-aldol reaction.Entities:
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Year: 2008 PMID: 18351770 PMCID: PMC3119889 DOI: 10.1021/ol800298n
Source DB: PubMed Journal: Org Lett ISSN: 1523-7052 Impact factor: 6.005