6533b829fe1ef96bd128a20a

RESEARCH PRODUCT

ChemInform Abstract: Diels-Alder Reactions of 1-Phenylpyrano(3,4-b)indol-3-ones with Alkynes: New Functionalized Carbazoles.

Ulf PindurHoushang Erfanian-abdoust

subject

chemistry.chemical_compoundchemistryDiels alderOrganic chemistryGeneral MedicineBenzoic acidCatalysis

description

3-Indolylalkanoic acids 2 react with benzoic acid anhydride under catalysis of Et2O - ZnCl2 and mild conditions to furnish the 1-phenyl-substituted pyrano[3,4-b]indol-3-ones 1c, 1d, and 3a, 3b. Products 1c, 1d, and 3b may be converted into the novel functionalized carbazoles 4 and 5 by reaction with acceptor-substituted alkynes.

https://doi.org/10.1002/chin.199045166