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RSS FeedsOne-pot activation–alkynylation–cyclization synthesis of 1,5-diacyl-5-hydroxypyrazolines in a consecutive three-component fashion (Beilstein Journal of Organic Chemistry)

 
 

19 june 2019 18:00:21

 
One-pot activation–alkynylation–cyclization synthesis of 1,5-diacyl-5-hydroxypyrazolines in a consecutive three-component fashion (Beilstein Journal of Organic Chemistry)
 




Abstract 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. Beilstein J. Org. Chem. 2019, 15, 1360–1370. doi:10.3762/bjoc.15.136


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19 viewsCategory: Chemistry
 
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