Cu-catalyzed C(sp<sup>2</sup>)–N-bond coupling of boronic acids and cyclic imides
作者:Linn Neerbye Berntsen、Thomas Nordbø Solvi、Kristian Sørnes、David S. Wragg、Alexander H. Sandtorv
DOI:10.1039/d1cc04356k
日期:——
Cu-t the Ru. A general Cu-catalyzed method for (E)-enimide-formation is described. The process is mild and practical, and couples cyclic imides and alkenylboronic acids. The method can also be used to prepare N-arylimides.
Enamides and enimides were prepared stereospecifically from vinyl bromides by direct vinylic substitution in the presence of copper salt in aprotic polar solvents.
Ru-Catalyzed Stereoselective Addition of Imides to Alkynes
作者:Lukas J. Goossen、Mathieu Blanchot、Claus Brinkmann、Käthe Goossen、Ralph Karch、Andreas Rivas-Nass
DOI:10.1021/jo061966h
日期:2006.12.1
A catalyst system formed in situ from bis(2-methylallyl)cycloocta- 1,5-dieneruthenium(II) ((cod)Ru[met](2)), a phosphine, and scandium(III) trifluoromethanesulfonate (Sc-(OTf)(3)) was found to efficiently catalyze the anti-Markovnikov addition of imides to terminal alkynes, allowing mild and atom-economic synthesis of enimides. Depending on the phosphine employed, both the (E)- and the (Z)-isomer can be accessed stereoselectively.
SPECKAMP, W. N.;DE, BOER, J. J. J., REC. TRAV. CHIM. PAYS-BAS, 1983, 102, N 9, 410-414
作者:SPECKAMP, W. N.、DE, BOER, J. J. J.
DOI:——
日期:——
YANAGI KIYOSHI; NISHIYAMA TAKEO, NIXON KAGAKU KAJSI, NIRRON KAGAKU KAISNI, J. CHEM. SOS. JAR., CHEM. AND I+