Synthesis of Isocoumarins and α-Pyrones via Electrophilic Cyclization
摘要:
A variety of substituted isocoumarins and alpha-pyrones are readily prepared in excellent yields under very mild reaction conditions by the reaction of o-(1-alkynyl)benzoates and (Z)-2-alken-4-ynoates with ICI, I-2, PhSeCl, p-O2NC6H4SCl, and HI. This methodology accommodates various alkynyl esters and has been successfully extended to the synthesis of polycyclic aromatic and biaryl compounds.
[EN] SMALL MOLECULE INHIBITORS OF A PROTEIN COMPLEX<br/>[FR] INHIBITEURS À PETITES MOLÉCULES D'UN COMPLEXE PROTÉIQUE
申请人:UNIV CALIFORNIA
公开号:WO2020247608A1
公开(公告)日:2020-12-10
Compositions and methods for treating thrombosis, inflammation, and atherosclerosis by administration of a compound that binds to KRIT1 to inhibit binding with HEG1.
We developed a technique mediated by visible light for the aerobic homocoupling of terminal alkynes to synthesize 1,3-conjugated diynes using a copper(I) chloride catalyst at room temperature. Compared with previously reported thermal processes, this photochemical method is simple, uses only mild reaction conditions, produces high yields and works well for substrates with electron-withdrawing groups
Consecutive One-Pot Sonogashira-Glaser Coupling Sequence - Direct Preparation of Symmetrical Diynes by Sequential Pd/Cu Catalysis
作者:Eugen Merkul、Dominik Urselmann、Thomas J. J. Müller
DOI:10.1002/ejoc.201001472
日期:2011.1
Sonogashira coupling and the catalytic Glaser coupling are both catalyzed by the Pd-Cu complex couple and can be concatenated to a consecutivesequentiallyPd/Cu-catalyzed process in a one-pot fashion, and air oxygen serves as the only oxidant in the second step. In a pseudo-four-component synthesis, a broad variety of symmetrically substituted 1,4-bis(hetero)aryl-1,3-butadiynes are obtained in good
Copper-Mediated Homocoupling of Vinyl Dibromides to Symmetrical Diynes
作者:Gwilherm Evano、Alexis Coste、François Couty
DOI:10.1055/s-0029-1218688
日期:2010.5
1,1-Dibromoalk-1-enes were dimerized readily in the presence of copper iodide, a diamine ligand, and cesium carbonate in DMF to give symmetrical 1,3-diynes. The reaction was found to be selective and rather general, furnishing the corresponding diynes in good yields, even with complex and sensitive dibromides, and provides useful insights into the reactivity of 1,1-dibromoalk-1-enes with copper(I).
Acheson, R. Morrin; Lee, Gary C. M., Journal of Chemical Research, Miniprint, 1986, # 10, p. 3020 - 3036