A simple synthesis of 3-substituted furans. The preparations of dendrolasin, perillene and congeners
作者:Steven P. Tanis
DOI:10.1016/s0040-4039(00)88573-1
日期:1982.1
The Grignard reagent 7, derived from 3-chloromethyl furan, reacts with various alkyl- and allylic halides, in the presence of Li2CuCl4, to provide high yields of 3-substitutedfurans.
Highly enantiomerically pure. (S)-(-) 2 and (R )-(+)-frontalin 3 and (-) -malyngolide. 4 were synthesized from the common chiral building block, ( 2R) -1, 2-O-isopropylidene-2-hydroxymethyl-pent-4-ene.-1, 2-diol 9 readily prepared in five. steps and 35% overall yield from α-D-isosaccharino-1 ,4-lactone 1.
CONDUCTIVE POLYMER, SOLID ELECTROLYTIC CAPACITOR, AND PROCESSES FOR PRODUCING THESE
申请人:Showa Denko Kabushiki Kaisha
公开号:EP1028440A1
公开(公告)日:2000-08-16
The present invention relates to a solid electrolytic capacitor comprising an electrode produced by forming a solid electrolytic layer comprised by a polymer having at least one repeating unit selected from a thiophene-diyl skeleton, an isothianaphthene-diyl skeleton, a pyrrole-diyl skeleton, a furan-diyl skeleton and an iminophenylene skeleton and having a fibril structure on a dielectric film layer of a porous valve-acting metal and its production method, and to a highly electroconductive polymer obtained by chemical oxidative polymerization of a monomer and an oxidizing agent at an interface and its production method.
Electrically conducting polymer, solid electrolytic capacitor and manufacturing method thereof
申请人:Murata Manufacturing Co., Ltd.
公开号:EP2202765A2
公开(公告)日:2010-06-30
The present invention relates to a solid electrolytic capacitor comprising an electrode produced by forming a solid electrolytic layer comprised by a polymer having at least one repeating unit selected from a thiophene-diyl skeleton, an isothianaphthene-diyl skeleton, a pyrrole-diyl skeleton, a furan-diyl skeleton and an iminophenylene skeleton and having a fibril structure on a dielectric film layer of a porous valve-acting metal and its production method, and to a highly electroconductive polymer obtained by chemical oxidative polymerization of a monomer and an oxidizing agent at an interface and its production method.
Vinyl radical cyclization. 2. Dicyclization via selective formation of unsaturated vinyl radicals by intramolecular addition to triple bonds. Applications to the synthesis of butenolides and furans