ISSN:
1434-4475
Keywords:
4-Benzoyl-5-phenylfuran-2,3-dione
;
Dibenzoylacetic acid-N-carboxyamides
;
Oxazin-2,4-dione
;
Keto-enole tautomerism
;
Semiempirical quantum chemical calculations
;
Crystal structure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary 4-Benzoyl-5-phenylfuran-2,3-dione (1) and the urethanes2 combine under loss of carbon monoxide yielding the open chain dibenzoylacetic acid derivatives3 and4. 3a, b only can be cyclized to the oxazinone5. The keto-enole tautomerism3 ⇌4 is further investigated with aid of semiempirical quantum chemical calculations, based upon the molecular geometry of3a, deduced from an X-ray study.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00810475
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