In:
Zeitschrift fĂŒr Naturforschung B, Walter de Gruyter GmbH, Vol. 60, No. 9 ( 2005-9-1), p. 924-928
Abstract:
1,3-Dimethylbarbituric acid (1, R = Me) reacts with aqueous formaldehyde in the presence of pyridine to give 1,3-dimethyl-2,4,6-trioxo-5-pyridinomethyl-1,3-perhydrodiazin-5-ylpyridinium ylide (6) in good yield. From 6 and 2,3-dihydro-1,3-diisopropyl-4,5-dimethylimidazol- 2-ylidene (7), the zwitterionic imidazolium derivative 1,3-dimethyl-2,4,6-trioxo-5-(1,3-diisopropyl- 4,5-dimethylimidazoliomethyl)-1,3-perhydrodiazin-5-yl-imidazolium ylide (8) is obtained. Similarly, the phosphonium compound 1,3-dimethyl-2,4,6-trioxo-5-triphenylphosphoniomethyl-1,3- perhydrodiazin-5-y l-phosphonium ylide (9) is obtained from 6 and PPh 3 . The crystal structures of 8 and 9 are reported.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.1515/znb-2005-0902
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2005
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
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