3-Aroylindoles have been prepared via copper-catalyzed cyclization of N-(2-iodoaryl)enaminones, readily available from 2-iodoanilines and α,β-ynones. The reaction tolerates a variety of useful functionalities including ether, keto, cyano, bromo, and chloro substituents. This indole synthesis can also be carried out from 2-iodoanilines and α,β-ynones through a sequential process that omits the isolation of enaminone intermediates.
The hydrogen-bond as a configurational lock in the photocyclisation of dibenzoylmethane o-halogenoanils: wavelength dependence of this reaction
作者:James Grimshaw、A. Prasanna de Silva
DOI:10.1039/c39800000301
日期:——
The tautomers (1, XCl, Br, or I) of anils photocyclise to the phenanthridine derivative (2) with varying efficiencies depending on the halogen and the solvent; owing to the low energies of the first excited states the quantum yields vary with irradiation wavelength.
Grimshaw, James; de Silva, A. Prasanna, Journal of the Chemical Society. Perkin transactions II, 1981, p. 1010 - 1014
作者:Grimshaw, James、de Silva, A. Prasanna
DOI:——
日期:——
The base-promoted synthesis of multisubstituted benzo[b][1,4]oxazepines
作者:Jinhai Shen、Lulu Xue、Xing Lin、Guolin Cheng、Xiuling Cui
DOI:10.1039/c5cc09877g
日期:——
A variety of substituted benzo[b][1,4]oxazepines have been prepared via base-promoted intramolecular O-arylation from N-(2-haloaryl)enaminones under metal-free conditions.
在无金属条件下,由N-(2-卤代芳基)烯酮通过碱促进的分子内O-芳基化反应制备了各种取代的苯并[ b ] [1,4]氧杂ze庚因。
Copper-Catalyzed CC Bond Formation through CH Functionalization: Synthesis of Multisubstituted Indoles from<i>N</i>-Aryl Enaminones
A variety of functionalities, including the whole range of halogen substituents, are tolerated in the title reaction, an intramolecular approach for the construction of a multisubstituted indole skeleton from readily available enaminones (see scheme; phen=1,10‐phenanthroline). The indole products are also prepared directly in high yield from α,β‐ynones and primary amines.