Synthesis of Isomerically Pure (<i>Z</i>)-Alkenes from Terminal Alkynes and Terminal Alkenes: Silver-Catalyzed Hydroalkylation of Alkynes
作者:Mitchell T. Lee、Madison B. Goodstein、Gojko Lalic
DOI:10.1021/jacs.9b09336
日期:2019.10.30
molecules and often are used as intermediates in organic synthesis. Many alkenes exist in two stereoisomeric forms (E and Z), which have different structures and different properties. The selective formation of the two isomers is an important synthetic goal that has long inspired the development of new synthetic methods. However, the efficient synthesis of diastereopure, thermodynamically less stable, Z-alkenes
Stereospecific Synthesis of <i>E</i>-Alkenes through Anti-Markovnikov Hydroalkylation of Terminal Alkynes
作者:Avijit Hazra、Jason Chen、Gojko Lalic
DOI:10.1021/jacs.9b04800
日期:2019.8.14
We have developed a method for stereospecificsynthesis of E-alkenes from terminal alkynes and alkyl iodides. The hydroalkylation reaction is enabled by a cooperative action of copper and nickel catalysts and proceeds with excellent anti-Markovnikov selectivity. We demonstrate the broad scope of the reaction, which can be accomplished in the presence of esters, nitriles, aryl bromides, ethers, alkyl
Regio- and Diastereoselective Synthesis of <i>E</i>-Allylic Amines through Hydroalkylation of Terminal Alkynes
作者:Bofei Wang、Avijit Hazra、Gojko Lalic
DOI:10.1021/acscatal.4c00853
日期:2024.4.19
Allylic amines make up an important class of organic compounds that have inspired the development of numerous methods for their synthesis. One of the most effective transformations involves the coupling of internal alkynes with appropriate nitrogen-containing electrophiles in the presence of a transition metal catalyst. We have developed a method that allows transformation of terminal alkynes into
HARWOOD, LAURENCE M.;LEEMING, SARAH A.;ISAACS, NEIL S.;JONES, GERAINT;PIC+, TETRAHEDRON LETT., 29,(1988) N 39, C. 5017-5020
作者:HARWOOD, LAURENCE M.、LEEMING, SARAH A.、ISAACS, NEIL S.、JONES, GERAINT、PIC+
DOI:——
日期:——
The high pressure mediated intramolecular diels-alder reaction of furans: Factors controlling cycloaddition with monoactivated dienophiles.
作者:Laurence M. Harwood、Sarah A. Leeming、Neil S. Isaacs、Geraint Jones、John Pickard、Royston M. Thomas、David Watkin
DOI:10.1016/s0040-4039(00)80668-1
日期:1988.1
The Intramolecular Diels-Alderreactions of furans possessing a 2-alkyl substituent with a terminal α,β-unsaturated ketone have been surveyed. The consequences of varying the degree of substitution of the furan, the bridging chain length, and position of the activating group on the dienophile upon the ease and stereochemistry of cycloaddition are reported.