Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 3326-71-4, is researched, SMILESS is O=C(C1=CC=CO1)NN, Molecular C5H6N2O2Journal, Article, Beilstein Journal of Organic Chemistry called One-pot activation-alkynylation-cyclization synthesis of 1,5-diacyl-5-hydroxypyrazolines in a consecutive three-component fashion, Author is Goergen, Christina; Boden, Katharina; Reiss, Guido J.; Frank, Walter; Mueller, Thomas J. J., the main research direction is diacyl hydroxypyrazoline preparation; hetero aryl glyoxylic acid arylacetylene hydrazide activation alkynylation cyclization; C–C coupling; activation; alkynylation; copper; cyclization; multicomponent reactions.Name: 2-Furoic hydrazide.
A consecutive three-component activation-alkynylation-cyclization reaction of (hetero)aryl glyoxylic acids, oxalyl chloride, arylacetylenes, and hydrazides efficiently forms 1,5-diacyl-5-hydroxypyrazolines in moderate to good yields. The structures were unambiguously corroborated by comprehensive NMR spectroscopy and X-ray structure analyses of selected derivatives
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Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics