Arylation of Aldehyde Homoenolates with Aryl Bromides
摘要:
A mild palladium catalyzed coupling of reactive aldehyde homoenolates with aryl bromides is described. Aldehyde homoenolates are generated by ring opening of cyclopropanols via a C-C cleavage step. The coupling generates aldehyde products at room temperature in 59-93% yield.
Efficient Synthesis of β-CF<sub>3</sub>/SCF<sub>3</sub>-Substituted Carbonyls via Copper-Catalyzed Electrophilic Ring-Opening Cross-Coupling of Cyclopropanols
作者:Yong Li、Zhishi Ye、Tabitha M. Bellman、Teng Chi、Mingji Dai
DOI:10.1021/acs.orglett.5b00782
日期:2015.5.1
The first copper-catalyzed ring-opening electrophilic trifluoromethylation and trifluoromethylthiolation of cyclopropanols to form Csp3–CF3 and Csp3–SCF3 bonds have been realized. These transformations are efficient for the synthesis of β-CF3- and β-SCF3-substituted carbonyl compounds that are otherwise challenging to access. The reaction conditions are mild and tolerate a wide range of functional
The Reaction of Cyclopropanols with Burgess Reagent: A Reinvestigation and Correction
作者:Klaus Banert、Monika Ries、Ernst Schaumann
DOI:10.1080/10426507.2010.531334
日期:2011.1.31
The reaction of cyclopropanols with Burgess reagent yields the unusual sulfamates 8 and their N-methylated derivatives 9. Unlike a previous study, dicyclopropyl ether formation was not observed. Also, the mechanism of ether formation from a cyclopropanol precursor cannot follow an S(N)2 pathway with retention.
[EN] NEW THERAPEUTIC APPLICATION OF 1,2-DIOXOLANE-3,5-DISUBSTITUTED COMPOUNDS, AND METHOD FOR THE PRODUCTION THEREOF<br/>[FR] NOUVELLE APPLICATION THÉRAPEUTIQUE DE COMPOSÉS 1,2-DIOXOLANE-3,5-DISUBTITUÉS ET LEUR PROCÉDÉ DE FABRICATION
申请人:UNIV PARIS SACLAY
公开号:WO2020193649A1
公开(公告)日:2020-10-01
L'invention concerne les applications thérapeutiques, notamment le traitement ou la prévention de maladie liées à une infection par un protozoaire (paludisme, leishmaniose) ou une infection fongique, de composés 1,2-dioxolane-3,5-disubstitués, ainsi que leur procédé d'obtention.
[EN] PROCESS FOR PREPARING 1,2-ENDOPEROXIDE COMPOUNDS<br/>[FR] PROCÉDÉ DE PRÉPARATION DE COMPOSÉS 1,2-ENDOPEROXYDE
申请人:UNIV PARIS SACLAY
公开号:WO2020193650A1
公开(公告)日:2020-10-01
L'invention concerne un nouveau procédé de préparation d'un composé 1,2-endoperoxyde de formula (I) ainsi que des produits obtenus par ledit procédé.
Copper-Catalyzed Cyclopropanol Ring Opening C<sub>sp<sup>3</sup></sub>–C<sub>sp<sup>3</sup></sub> Cross-Couplings with (Fluoro)Alkyl Halides
作者:Zhishi Ye、Kristen E. Gettys、Xingyu Shen、Mingji Dai
DOI:10.1021/acs.orglett.5b03096
日期:2015.12.18
copper-catalyzed cyclopropanol ring opening cross-coupling reactions with difluoroalkyl bromides, perfluoroalkyl iodides, monofluoroalkyl bromides, and 2-bromo-2-alkylesters to synthesize various β-(fluoro)alkylated ketones are reported. The reactions feature mild conditions and excellent functional group compatibility and can be scaled up to gram scale. Preliminary mechanistic studies suggest the involvement