Heterocyclic analogs of pleiadiene 76. Synthesis and tautomeric conversions of mono- and disubstituted perimidines with electron-withdrawing substituents in the naphthalene fragment
作者:I. V. Borovlev、A. F. Pozharskii、E. A. Filatova、O. P. Demidov
DOI:10.1007/s10593-010-0506-1
日期:2010.7
A series of new mono- and disubstituted perimidines with electron-withdrawing substituents in the naphthalene fragment has been synthesized. Their prototropic annular tautomerism has been investigated by 1H NMR spectroscopy.
合成了一系列在萘片段中具有吸电子取代基的新的单或二取代的嘧啶。通过1 H NMR光谱已经研究了它们的质子环互变异构。
An Improved One-Pot Method for the Preparation of 2-Substituted 1H-Perimidines
2-substituted H-1-perimidines are readily prepared, in high yields, by refluxing a mixture of sodium pyrosulfite, an aldehyde, and 1,8-diaminonaphthalene in aqueous ethanol or N,N-dimethylformamide. The method is of wide applicability except from araldehydes bearing a strong electron-withdrawing group (-CN, -NO2).
SABANOV V. X.; KLIMOV E. S.; BOGDANOVA I. V.; TRUB E. P.; BERBEROVA N. T.+, XIMIYA GETEROTSIKL. SOED.,(1986) N 7, 970-972
作者:SABANOV V. X.、 KLIMOV E. S.、 BOGDANOVA I. V.、 TRUB E. P.、 BERBEROVA N. T.+
DOI:——
日期:——
Unexpected Reaction Pathways in the Reaction of Alkoxyalkynylchromium(0) Carbenes with Aromatic Dinucleophiles
作者:Miguel A. Sierra、María J. Mancheño、Juan C. del Amo、Israel Fernández、Mar Gómez-Gallego
DOI:10.1002/chem.200305138
日期:2003.10.17
Compound 18 is formed by a nucleophilic addition to a CO ligand in a preformed carbene complex. This is a new example of the rare attack of a nucleophile on a CO ligand in a Fischer carbene complex. Adducts 10 form seven-membered-ring carbene complexes 19 and 20 by intramolecular aminolysis. In contrast, reaction of alkynyl carbene complexes with 1,8-diaminonaphthalene under very mild conditions leads to