S. Yano, K. Nishino, K. Nakasuji
Jul 5, 1978
Citations
0
Influential Citations
15
Citations
Journal
Chemistry Letters
Abstract
2,6-Diisopropyl-4-methylthiopyrylium tetrafluoroborate (18) was converted into the diazoester (19) by reaction with ethyl lithiodiazoacetate. Treatment of 19 with Pd(II) complex resulted in exclusive formation of ethyl 4,5-diisopropyl-2-methylbenzoate (21) through sulfur extrusion of the intermediate thiepin (20) even at −70°C.