Chemo-, Regio-, and Stereoselective Copper(II)-Catalyzed Boron Addition to Acetylenic Esters and Amides in Aqueous Media
作者:Amanda K. Nelson、Cheryl L. Peck、Sean M. Rafferty、Webster L. Santos
DOI:10.1021/acs.joc.6b00648
日期:2016.5.20
Aqueous conditions were developed for conducting an open-to-air, copper(II)-catalyzed addition of pinBBdan to alkynoates and alkynamides. The simple and mild β-borylation protocol proceeds in a remarkably chemo-, regio-, and stereoselective fashion to afford 1,8-diaminonaphthalene protected (Z)-β-boryl enoates and primary, secondary, and tertiary enamides in good to excellent yields. These reactions
Palladium-Catalyzed Coupling Reactions of N-Methoxy-N-methylcarbamoyl Chloride for the Synthesis of N-Methoxy-N-methylamides
作者:Masahiro Murakami、Yujiro Hoshino、Hajime Ito、Yoshihiko Ito
DOI:10.1246/cl.1998.163
日期:1998.2
A new synthetic method of N-methoxy-N-methylamides is developed. The palladium-catalyzedcouplingreaction of N-methoxy-N-methylcarbamoyl chloride furnished N-methoxy-N-methylamide in moderate to good yield, wherein a carbonyl equivalent was appended to sp and sp2 carbon atoms as a versatile synthetic basis for further manipulation.
Development of a palladium catalyzed addition of boronic acids to alkynyl esters: synthesis of trisubstituted olefins as single isomers
作者:Alexander Graham Bush、Jojo Liu Jiang、Philippa R. Payne、William W. Ogilvie
DOI:10.1016/j.tet.2009.08.029
日期:2009.10
Very small phosphine ligands allow access to single isomer trisubstituted olefins from alkynyl esters with complete control of both stereochemistry and regiochemistry. This method provides a convenient synthesis of single isomer trisubstituted olefins without requiring olefin templates.
The synthesis of alk-2-ynl Weinreb amides via Pd/Cu-catalysed oxidative carbonylation of terminal alkynes
作者:Bharati Mourya、Sandip T. Gadge、Bhalchandra M. Bhanage
DOI:10.1039/d4ob00290c
日期:——
alk-2-ynl-Weinreb amides via Pd-catalyzed oxidative carbonylation of terminal alkynes and N,O-dimethylhydroxylamine hydrochloride at room temperature under low CO/O2 pressure is reported for the first time. This protocol offers tolerance of various functional groups under mild reaction conditions. The protocol incorporates aromatic- and aliphatic-substituted alkynes through a one-step oxidative carbonylative route