One step synthesis of γ-alkylidenebutenolides from simple vinyl carboxylic acids and alkenes
作者:Chunbing Yu、Jian Zhang、Guofu Zhong
DOI:10.1039/c7cc04973k
日期:——
a straightforward and atom-economical protocol for the synthesis of a wide range of valuable γ-alkylidenebutenolides. This method is of particular interest because of employing widely available and low cost vinyl carboxylic acids and electron-deficient alkenes as building blocks. Moreover, the methodology can be applied to a gram scale synthesis with 1 mol% catalyst loading.
Total Synthesis and Detection of the Bilirubin Oxidation Product (<i>Z</i>)-2-(3-Ethenyl-4-methyl-5-oxo-1,5-dihydro-2<i>H</i>-pyrrol-2-ylidene)ethanamide (<i>Z</i>-BOX A)
The selective total synthesis of the pure Z-isomer of BOX A (8a), a product of oxidative heme degradation with significant physiological impact, was achieved in four to six steps starting from 3-bromo-4-methylfuran-2,5-dione (1). Z-BOX A forms a strong hydrogen bridge framework in the crystalline state. LC-MS techniques allow identification and characterization of isomeric forms of BOX A.
Synthesis of Enol Lactones Under a Solid/Liquid Phase Transfer Witting Reaction
作者:Jun Zhu、Margaret M. Kayser
DOI:10.1080/00397919408011715
日期:1994.4
Lee, Hiok-Huang; Que, Yoon-Ten; Ng, Soon, Journal of the Chemical Society. Perkin transactions I, 1985, p. 453 - 456
作者:Lee, Hiok-Huang、Que, Yoon-Ten、Ng, Soon
DOI:——
日期:——
Kayser, Margaret M.; Breau, Livain, Canadian Journal of Chemistry, 1989, vol. 67, p. 1401 - 1410