Formation of new heterocycles by intramolecular cyclization reactions of alkynethiolates with nitrogen nucleophiles

DOI: 10.1016/S0040-4039(01)02326-7

Source and publish data:

Tetrahedron Letters p. 1015 - 1017 (2002)

Update date:2022-08-05

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Authors:

Hameurlaine, Ahmed

Abramov, Michael A

Dehaen, Wim

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Article abstract of DOI:10.1016/S0040-4039(01)02326-7

1,2,3-Thiadiazole-4-carbohydrazides undergo base-catalyzed ring cleavage with liberation of nitrogen and recyclization to 5-thiopyrazolones, 6-thiomethylidene-1,3,4-oxadiazin-5-ones or 5-thio-7H-pyrazolo[5,1-b][1,3]thiazine-2,7-diones.

Full text of DOI:10.1016/S0040-4039(01)02326-7

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