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Practical Preparation of Ethyl 2-Methylthiophene-3-carboxylate
2011
Chemical and pharmaceutical bulletin
Preserved Fulltext
A safe and efficient process for the preparation of ethyl 2-methylthiophene-3-carboxylate (5) was devised. This process provides several advantages over the precedents, involving operational simplicity, avoidance of the use of strong bases such as n-butyllithium and application of noncryogenic conditions, and enabled to prepare 5 in 52% overall yield from commercially available 2-methylthiophene on a multikilogram scale.
doi:10.1248/cpb.59.797
pmid:21628923
fatcat:kbnclb7zubbxlb5xivmehb7vsu