While the reactions of a number of functionalised cyclopropenes with (
diisopropoxyphosphoryl)nitrile oxide lead to 2-oxa-3-azabicyclo[3.1.0]
hex-3-enes, 1-bromo-3.3-dimethylcyclopropene leads to an isoxazole and
3.3-dimethyl-1,2-dichlorocyclopropene leads to an oxazine (C) 1996 El
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