反应详情

The same reaction as in Referential Example 37 was carried out except using 380 mg of 5-bromo-3-thiophenecarboxylic acid ethyl ester [see J. Am. Chem. Soc., 26, 2446 (1954)], 730 mg of tributyl(3-thienyl)stannane and 10 mg of tetrakis(triphenylphosphine) palladium to give 172 mg (yield 51%) of 5-(3-thienyl)-3-thiophenecarboxylic acid ethyl ester.

1. customThe same reaction as in Referential Example 37