General approach for regioselective synt
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Wafaa M. Abdou; Neven A. F. Ganoub
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Article
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2000
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John Wiley and Sons
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English
β 260 KB
π 2 views
A series of fused 1,3,4-oxadiazines were regioselectively prepared in reasonable yields as major products from the reactions of the corresponding β£carbonyl hydrazones with tetraethyl 1,3-dithietane-2,4-diylidene-bis(cyanomethylphosphonate) (1). Side products were also observed wherein the dimeric pr