CRYSTAL-STRUCTURE AND MOLECULAR-STRUCTURE OF ACETYL-7-METHYL-2H,5H-PYRANO-(4,3B)PYRON-2,5-DIONE - C13H9O6

Authors
HAMDI M SPEZIALE V JAUD J
Citation
M. Hamdi et al., CRYSTAL-STRUCTURE AND MOLECULAR-STRUCTURE OF ACETYL-7-METHYL-2H,5H-PYRANO-(4,3B)PYRON-2,5-DIONE - C13H9O6, Zeitschrift fur Kristallographie, 209(6), 1994, pp. 495-498
Citations number
6
Categorie Soggetti
Crystallography
Journal title
Zeitschrift fur Kristallographie → ACNP
ISSN journal
00442968
Volume
209
Issue
6
Year of publication
1994
Pages
495 - 498
Database
ISI
SICI code
0044-2968(1994)209:6<495:CAMOA>2.0.ZU;2-X
Abstract
Reaction of 4-hydroxy-6-methyl-2-pyrone with ethyl orthoformiate leeds by heating not to 6-methyl-3(4-hydroxy-6-methyl-3 roxy-6-methyl-2-one -2H-pyron-3-yl)methylene-2(4)3H pyron-2,4-dione as previously reported in the literature, but to 3-acetoacetyl-7-methyl-2H, 5H pyrano-(4,3b) pyron-2,5-dione: C13H9O6, monoclinic system, space group P2(1)/a,a = 7 ,244(3), b = 21,671(7), c = 7,459(4) angstrom, beta = 102,75(2)degrees .