Indolizin-1-ols with Charged Electron Acceptors: A Direct Way to 3<i>H</i>-Indolizinium-1-olates with Donor Functions
作者:Ilya V. Nechaev、Georgij V. Cherkaev
DOI:10.1021/acs.joc.2c01700
日期:2022.11.4
indolizine-1,7-dione dimers. The exploration of N-(1-hydroxyindolizin-7-yl)pyridiniumsalts’ chemistry led to a reaction discovery, affording a new type of rare pseudo-cross-conjugated mesomeric betaines (3H-indolizin-4-ium-1-olates with an electron-donating function at C7 position) inaccessible by other means. In this reaction, a sequential introduction of nucleophiles takes place: the first one (Nu1)
KATNITZKY A. R.; BANERJI J.; BOONYARAKVANICH A.; CUTLER A. T.; DENNIS N.;+, J. CHEM. SOC. PERKIN TRANS., PARK 1, 1979, NO 2 399-407
作者:KATNITZKY A. R.、 BANERJI J.、 BOONYARAKVANICH A.、 CUTLER A. T.、 DENNIS N.、+
DOI:——
日期:——
1,3-Dipolar character of six-membered aromatic rings. Part 49. 3-Oxido-1-(4-pyridyl)pyridinium, 3-oxido-1-(2-pyridyl)pyridinium, 3-oxido-1-(quinoxolin-2-yl)pyridinium, 3-oxido-1-(5,6-diphenyl-1,2,4-triazin-3-yl)pyridinium, and 3-oxido-1-(5-phenyl-1,2,4-triazin-3-yl)pyridinium
作者:Alan R. Katritzky、Anongrat Boonyarakvanich、Nicholas Dennis
DOI:10.1039/p19800000343
日期:——
and all add a variety of 2π, 4π, and/or 6π dipolarophiles. The regio- and stereo-chemistry of the addition are elucidated and rationalised. The pyridyl adducts undergo quaternisation and ring opening to tropolones.