Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 26, Issue 34, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.202300450
Keywords
azaoxyallyl cations; cross-1,3-dipolar cyclizations; N,N'-cyclic azomethine imines; diastereoselective synthesis
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A cross-1,3-dipolar cycloaddition reaction between α-halohydroxamates (azaoxyallyl cations generated in situ) and N,N'-cyclic azomethine imines was developed. The synthetic protocol provided a facile and rapid access to pyrazolo[1,2-a][1,2,4]triazine derivatives with good yields and excellent diastereoselectivities under mild metal-free conditions.
A cross-1,3-dipolar cycloaddition reaction of a-halohydroxamates (in situ generated azaoxyallyl cations) with N,N'-cyclic azomethine imines was developed. The synthetic protocol provided facile and rapid access to pyrazolo[1,2-a][1,2,4]triazine derivatives in good yields and excellent diastereoselectivities under mild metal-free conditions.
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