Regioselective Ring Opening and Isomerization Reactions of 3,4-Epoxyesters Catalyzed by Boron Trifluoride
作者:Javier Izquierdo、Santiago Rodríguez、Florenci V. González
DOI:10.1021/ol201378w
日期:2011.8.5
Efficient ring opening of 3,4-epoxyesters with alcohols to produce 4-alkoxy-3-hydroxyesters and their isomerization into 4-ketoesters using borontrifluoride as the catalyst are presented. Both transformations are simple and efficient methods for the synthesis of the above named synthetically useful compounds.
Dicyclohexane-annelated anthracene was synthesized by a new efficient method, which employed the Diels–Alder reaction between in situ-generated 2,3-dehydronaphthalene and dicyclohexane-fused furan....
Titanium-Mediated Domino Cross-Coupling/Cyclodehydration and Aldol-Addition/Cyclocondensation: Concise and Regioselective Synthesis of Polysubstituted and Fused Furans
作者:Lu Ren、Juan Luo、Linbo Tan、Qiang Tang
DOI:10.1021/acs.joc.1c02894
日期:2022.3.4
Titanium enolates, in situ-generated from readily available ketones and titanium tetraisopropoxide, undergo domino cross-coupling/cyclodehydration or domino Aldol-addition/cyclocondensation with α-chloroketones to provide synthetically valuable furan derivatives. The domino process tolerates a variety of cyclic and acyclic ketones and chloroketones, producing polysubstituted furans and bi-, tri-, and
Preparation and characterization of “furanoradialene” (tetramethylene - tetrahydrofuran)
作者:J. Jullien、J.M. Pechine、F. Perez、J.J. Piade
DOI:10.1016/s0040-4039(01)85570-2
日期:1980.1
Tetramethylene-tetrahydrofuran has been prepared by flash vacuum thermolysis. This compound is stable in solution below −50° C, and was characterized by NMR and mass spectrometry.