β-Ketolactone synthons. Short efficient syntheses of jasmonoids.
作者:David J. Goldsmith、John K. Thottathil
DOI:10.1016/s0040-4039(01)92929-6
日期:1981.1
The cyclopentanoid β-ketolactone , serving as the equivalent of a specific enolate of a 3-alkyl cyclopentanone, has been converted to several jasmonoid substances.
相当于3-烷基环戊酮的特定烯醇化物的环戊烷β-酮内酯已被转化为几种茉莉酮类物质。
Increasing the Structural Span of Alkyne Metathesis
作者:Peter Persich、Josep Llaveria、Rudy Lhermet、Teresa de Haro、Robert Stade、Azusa Kondoh、Alois Fürstner
DOI:10.1002/chem.201302320
日期:2013.9.23
new generation of alkyne metathesis catalysts, which are distinguished by high activity and an exquisite functional group tolerance, allows the scope of this transformation to be extended beyond its traditional range. They accept substrates that were previously found problematic or unreactive, such as propargyl alcohol derivatives, electron‐deficient and electron‐rich acetylenes of various types, and
Pyrazolo[3,4-b]pyrrolo[3,4-e]pyridine-5(1H)-one and
申请人:ICI Americas Inc.
公开号:US04705793A1
公开(公告)日:1987-11-10
Novel pyrazolo[3,4-b]pyridine lactams which are useful as anxiolytics are disclosed including methods of preparation, pharmaceutical compositions containing them and intermediates used in their preparation.
[EN] SYNTHESIS OF ENT-PROGESTERONE AND INTERMEDIATES THEREOF<br/>[FR] SYNTHÈSE DE L'ÉNANTIOMÈRE DE LA PROGESTÉRONE ET SES INTERMÉDIAIRES
申请人:PREVACUS INC
公开号:WO2016044558A1
公开(公告)日:2016-03-24
The present invention relates to the synthesis of ent-progesterone and intermediates thereof.
本发明涉及炔诺酮及其中间体的合成。
Integrating Allyl Electrophiles into Nickel‐Catalyzed Conjunctive Cross‐Coupling
作者:Van T. Tran、Zi‐Qi Li、Timothy J. Gallagher、Joseph Derosa、Peng Liu、Keary M. Engle
DOI:10.1002/anie.201915454
日期:2020.4.27
offer exciting possibilities in organic synthesis but remains largely unknown. Herein, we report the use of allyl electrophiles in nickel-catalyzed conjunctive cross-coupling with a non-conjugated alkene and dimethylzinc. The transformation is enabled by weakly coordinating, monodentate aza-heterocycle directing groups that are useful building blocks in synthesis, including saccharin, pyridones, pyrazoles