In the presence of a Cu(I) catalyst and a pyridine oxide, alkynyl oxiranes and oxetanes can be converted into functionalized five- or six-membered α,β-unsaturated lactones or dihydrofuranaldehydes. This new oxidative cyclization is proposed to proceed via an unusual allenyloxypyridinium intermediate.
A general evaluation of silylated nucleophiles to intercept transient [small alpha]-oxoketenes generated by microwave-assisted Wolff rearrangement of 2-diazo-1,3-dicarbonyl compounds is presented. Original scaffolds and synthetic intermediates are accessed in a rapid,...
Gelin, Suzanne; Dolmazon, Rene, Journal of Heterocyclic Chemistry, 1983, vol. 20, p. 543 - 546
作者:Gelin, Suzanne、Dolmazon, Rene
DOI:——
日期:——
Dolmazon, Rene; Gelin, Suzanne, Bulletin de la Societe Chimique de France, 1985, # 5, p. 931 - 936
作者:Dolmazon, Rene、Gelin, Suzanne
DOI:——
日期:——
An Unprecedented Reaction of Diethylaminosulfur Trifluoride with Furanones
作者:Virendra Kumar、Malcolm R. Bell
DOI:10.3987/com-92-6060
日期:——
Reaction of diethylaminosulfur trifluoride (DAST) with furanones did not provide the expected gem-difluoro compounds instead the methylene hydrogens of furanones were replaced by a fluorine and sulfinyl group.