Stereoselective Synthesis of Both Enantiomers of Trifluoro-γ-valerolactone and Pentafluoro-γ-caprolactone
作者:Pierfrancesco Bravo、Massimo Frigerio、Alfonso Melloni、Walter Panzeri、Cristina Pesenti、Fiorenza Viani、Matteo Zanda
DOI:10.1002/1099-0690(200206)2002:12<1895::aid-ejoc1895>3.0.co;2-1
日期:2002.6
Both enantiomers of 5-(trifluoromethyl)dihydrofuran-2-one (1a) and 5-(pentafluoroethyl)dihydrofuran-2-one (1b) have been synthesised stereoselectively, in four steps, starting from chiral (R)- or (S)-3-[(4-methylphenyl)sulfinyl]propionic acid (2) and commercially available perfluorinated esters. Compound (+)-(S)-1b is the pentafluoro analogue of the aggregation pheromone of Trogoderma glabrum.