An annelation approach to the synthesis of eudesmane and elemane sesquiterpene lactones. Total synthesis of dl-dihydrocallitrisin, dl-7,8-epialantolactone, dl-7,8-epiisoalantolactone, and dl-atractylon
[EN] NOVEL TARGETING AGENTS FOR DIAGNOSTIC AND THERAPEUTIC INDICATIONS<br/>[FR] NOUVEAUX AGENTS DE CIBLAGE POUR INDICATIONS DIAGNOSTIQUES ET THÉRAPEUTIQUES
申请人:APOSENSE LTD
公开号:WO2013150534A1
公开(公告)日:2013-10-10
The invention relates to compounds and use thereof in the diagnosis and/or in treatment of medical disorders. In some embodiments, the compounds may be used for detecting a cancer. The compound may include a di-acid moiety. In some embodiments the di-acid moiety comprises a di-carboxylic acid and in some embodiments the di- acid moiety comprises a di-tetrazole.
[EN] PROCESS FOR THE DIRECT ALPHA-METHYLENATION OF KETONES<br/>[FR] PROCÉDÉ D'ALPHA-MÉTHYLÉNATION DIRECTE DE CÉTONES
申请人:RHODIA OPERATIONS
公开号:WO2020104398A1
公开(公告)日:2020-05-28
The invention relates to a process for preparing an α-methylene ketone comprising the step of reacting a ketone with formaldehyde in the presence of a catalyst which is an organic compound comprising at least one acid function or the corresponding salt, ester or amide thereof and at least one amine function or the corresponding ammonium salt, or a zwitterion thereof.
Palladium-catalyzed tandem Heck and aldol reactions between 2-bromobenzaldehydes and functionalized alkenes leading to naphthalenes
作者:Chan Sik Cho、Dong Kwon Lim、Jiao Qiang Zhang、Tae-Jeong Kim、Sang Chul Shim
DOI:10.1016/j.tetlet.2004.05.112
日期:2004.7
2-Bromobenzaldehydes react with an array of suitably functionalized alkenes in the presence of a catalytic amount of a palladium catalyst together with a base to afford the corresponding naphthalenes in moderate to good yields.
One-pot conversion of biomass-derived xylose and furfural into levulinate esters via acid catalysis
作者:Xun Hu、Shengjuan Jiang、Liping Wu、Shuai Wang、Chun-Zhu Li
DOI:10.1039/c7cc01078h
日期:——
Direct conversion of biomass-derived xylose and furfural into levulinic acid, a platform molecule, via acid-catalysis has been accomplished for the first time in dimethoxymethane/methanol. Dimethoxymethane acted as the electrophile to...
A Convenient Synthesis of α-Functional Alkyl Vinyl Ketones
作者:T. Ben Ayed、H. Amri
DOI:10.1080/00397919508011455
日期:1995.12
Abstract Reaction of 2-functional alkyl-1,3-diketones with 30% aqueous formaldehyde using aqueous 6-10M potassium carbonate solution as base, afforded a-functional alkylvinylketones in good yields.