ISSN:
0075-4617
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Reactions with Isobutyraldehyde, III1) 4-Hydroxy-2,8-diisopropyl-3,3,9,9-tetramethyl-perhydropyrimido[4,3-b][1,3]oxazine-6-one4-Hydroxy-2,8-diisopropyl-3,3,9,9-tetramethyl-perhydropyrimido[4,3-b][1,3]oxazine-6-one (3) is formed from urea and 2 molecules of α,α′-dichloro-diisobutylether (1). This can be hydrated to the very stable heterocyclic compound 6. The structure of 3 is proved by reductive degradation to 7-12 as well as by the synthesis of 6 from isobutyraldol (16) and 14.
Notes:
Aus Harnstoff und 2 Mol α.α′-Dichlor-diisobutyläther (1) entsteht 4-Hydroxy-2.8-diisopropyl-3.3.9.9-tetramethyl-perhydropyrimido[4.3-b][1.3]oxazin-6-on (3). Dieses läßt sich zu dem sehr stabilen Heterocyclus 6 hydrieren. Die Struktur von 3 wird durch Abbau zu 7-12 sowie durch Synthese von 6 aus Isobutyraldol (16) und 14 bewiesen.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jlac.19707340116
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