A New Method for the Lactonization of. OMEGA.-Hydroxy Carboxylic Acids with Di-2-thienyl Carbonate by the Promotion of DMAP and Iodine
Y Oohashi, K Fukumoto, T Mukaiyama
Index: Oohashi, Yoshiaki; Fukumoto, Kentarou; Mukaiyama, Teruaki Chemistry Letters, 2005 , vol. 34, # 1 p. 72 - 73
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Citation Number: 4
Abstract
Successive reactions of ω-hydroxycarboxylic acids with an equimolar amount of di-2-thienyl carbonate (2-DTC) in the presence of a catalytic amount of 4-(dimethylamino) pyridine (DMAP) followed by an addition of 2–4 equimolar amounts of iodine afforded the corresponding lactones in good to high yields.
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