SYNTHESIS AND STRUCTURE OF NOVEL 1,2-DIHYDROPHTHALIAZINE CONTAINING BETAINES

Authors
SACZEWSKI F GDANIEC M
Citation
F. Saczewski et M. Gdaniec, SYNTHESIS AND STRUCTURE OF NOVEL 1,2-DIHYDROPHTHALIAZINE CONTAINING BETAINES, Journal of heterocyclic chemistry, 35(3), 1998, pp. 707-710
Citations number
11
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Journal of heterocyclic chemistry → ACNP
ISSN journal
0022152X
Volume
35
Issue
3
Year of publication
1998
Pages
707 - 710
Database
ISI
SICI code
0022-152X(1998)35:3<707:SASON1>2.0.ZU;2-U
Abstract
Dihydro-2-(4,5-dihydroimidazol-2yl)phthalazin-1-ol 1 reacts exothermic ally with dialkyl acetylenedicarboxylates to give hthalazin]-1,4-dialk oxy-1,4-dioxo-2-buten-2-olates 7 and 8. Enolic ester compounds underwe nt further transesterification reactions with formation of the betaine s 9 and 10. The unequivocal structural assignment of these compounds w as achieved by spectroscopic H-1 and C-13 nmr methods as well as X-ray analysis of 7.