The Rh(III)-catalyzed C–H activation initiated cyclization of benzoicacids with electron-rich geminal-substituted vinyl acetates was described. The reaction was employed to prepare a range of 3-aryl and 3-alkyl substituted isocoumarins selectively.
Solid-Phase Synthesis of Indolecarboxylates Using Palladium-Catalyzed Reactions
作者:Kazuo Yamazaki、Yosuke Nakamura、Yoshinori Kondo
DOI:10.1021/jo0340307
日期:2003.7.1
Polymer-supported, palladium-catalyzed cyclization reactions effectively synthesized indolecarboxylates. Palladium-catalyzed carbon-carbon bond-forming reactions of immobilized enaminoesters followed by transesterification yielded indole 2- or 3-carboxylates with various functional groups on the benzene ring. Indolecarboxylates were efficiently cyclized via an intramolecular palladium-catalyzed amination reaction of immobilized N-substituted dehydrohalophenylalanines, and immobilized N-acetyl-dehydroalanines were efficiently converted into indolecarboxylates via tandem Heck-amination reactions.
Zincke, Chemische Berichte, 1892, vol. 25, p. 1495
作者:Zincke
DOI:——
日期:——
Carbon-13 NMR spectra of isocoumarin,N-methyl-1(2H)-isoquinolinone and related compounds
作者:S. L. Spassov、I. A. Atanassova、M. A. Haimova
DOI:10.1002/mrc.1270220314
日期:1984.3
AbstractThe 13C NMR spectra of isocoumarin, N‐methyl‐1(2H)‐isoquinolinone and 14 of their 3‐ and/or 4‐substituted derivatives were measured and assigned with the aid of various spectral techniques. The values of the one‐bond and some of the long‐range 13C‐13C‐1H coupling constants are reported. The effect of substitution on the 13C chemical shifts is discussed.
DANISHEFSKY S.; HARAYAMA T.; SINGH R. K., J. AMER. CHEM. SOC., 1979, 101, NO 23, 7008-7012