Palladium-catalyzed intermolecular transthioetherification of aryl halides with thioethers and thioesters
作者:Yahui Li、Gao Bao、Xiao-Feng Wu
DOI:10.1039/c9sc05532k
日期:——
Functional group transfer reactions are an important synthetic tool in modern organic synthesis. Herein, we developed a new palladium-catalyzed intermolecular transthioetherification reaction of arylhalides with thioethers and thioesters. The synthetic utility and practicality of this catalytic protocol are demonstrated in a wide range of successful transformations (>70 examples). This catalytic protocol
Pd‐Catalyzed Intermolecular Transthiolation of Ar‐OTf Using Methyl 3‐(Methylthio) Propanoate as a Thiol Surrogate
作者:Dandan Pan、Shasha Xu、Qingqiang Tian、Yahui Li
DOI:10.1002/ejoc.202100822
日期:2021.9.7
The work describes an intermoleculartransthiolation of Ar−OTf usingmethyl 3-(alkyllthio) propanoate as an odourless thiolsurrogate. A series of substituted aryl methyl sulfides have been obtained in moderate to good yields.
Aldol additions of pinacolone lithium enolate with ketones: reactivities governed predominantly by field effects
作者:Goutam Das、Edward R. Thornton
DOI:10.1021/ja00057a012
日期:1993.2
The relative reactivities of representative α- and β-heterosubstituted acyclic, cyclic (five- and six-membered), and aromatic ketones with the lithiumenolate of pinacolone in diethyl ether at -78 o C were determined. The order of reactivitiesof monosubstituted acetones (MeCOCH 2 X) is X=Cl>OTBDMS>OMe>SMe>NMe 2 >CH 2 SM>H>Me and spans a range of 10 4
测定了代表性的 α- 和 β- 杂取代的无环、环状(五元和六元)和芳香酮与频哪酮的烯醇锂在 -78 o C 的二乙醚中的相对反应性。单取代丙酮 (MeCOCH 2 X) 的反应性顺序为 X=Cl>OTBDMS>OMe>SMe>NMe 2 >CH 2 SM>H>Me,范围为 10 4
Novel indole derivatives as selective androgen receptor modulator (SARMS)
申请人:Lanter C. James
公开号:US20050250740A1
公开(公告)日:2005-11-10
The present invention is directed to novel indole derivatives, pharmaceutical compositions containing them and their use in the treatment of disorders and conditions modulated by the androgen receptor.
本发明涉及新型吲哚衍生物,含有它们的药物组合物以及它们在治疗由雄激素受体调节的疾病和症状中的应用。
New ketone homoenolate anion equivalents derived from (alkenyl)pentamethyl phosphoric triamides
Lithiated ambident anions derivedfrom (1-alkyl-2-propenyl)- or (1-phenyl-2-propenyl)-pentamethyl phosphoric triamides undergo regioselectively γ-reaction with various alkylating reagents and isobutyraldehyde. Further hydrolysis of adducts releases the ketone under acid conditions. Number of synthetic applications clearly show the ketone homoenolate behaviour of these new carbanions.