subsequent boron-trifluoride etherate catalyzed methanolysis of the resultant carbinol acetals . Treatment of α-acetylketene dithioacetals and with methylmagnesiumiodide afforded the carbinol acetals and respectively which under above sequence of reactions yielded the corresponding α-isopropylidene-γ-butyrolactones and in good yields.
Direct conversion of β,γ-unsaturated esters into lactones induced by TMS-I
作者:Olivier Piva
DOI:10.1016/s0040-4020(01)85681-7
日期:1994.1
beta,gamma-unsaturated esters readily prepared by photodeconjugation are converted in one step into butanolides by treatment with TMS-1. the reaction has been extended to the access to alpha-alkylidene lactones.
Shet, Jyoti B.; Amonkar, Chandan P.; Nadkarni, Vishnu S., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2005, vol. 44, # 7, p. 1505 - 1508
作者:Shet, Jyoti B.、Amonkar, Chandan P.、Nadkarni, Vishnu S.、Tilve, Santosh G.
DOI:——
日期:——
ONO, NOBORU;TAMURA, RUI;ISAMI, HAMAMOTO;NAKATSUKA, TAMONI;HAJAMI, JUN-ICH+, J. ORG. CHEM., 1983, 48, N 21, 3678-3684