Reactions of 5-dialkylamino-1,2,3-thiadiazole-4-carbaldehydes with amines as a method for the synthesis of 1,2,3-triazole-4-carbothioamides
摘要:
A method for the synthesis of previously inaccessible 5-dialkylamino-substituted 1,2,3-thiadiazole-4-carbaldehydes was developed. Ring transformation in these compounds induced by primary aliphatic and aromatic amines, hydroxylamines, and N-substituted hydrazines resulted in the synthesis of a broad range of 1,2,3-triazole-4-carbothioamide.
Reactions of 5-dialkylamino-1,2,3-thiadiazole-4-carbaldehydes with amines as a method for the synthesis of 1,2,3-triazole-4-carbothioamides
摘要:
A method for the synthesis of previously inaccessible 5-dialkylamino-substituted 1,2,3-thiadiazole-4-carbaldehydes was developed. Ring transformation in these compounds induced by primary aliphatic and aromatic amines, hydroxylamines, and N-substituted hydrazines resulted in the synthesis of a broad range of 1,2,3-triazole-4-carbothioamide.
The effect of the C5-substituent on regioselectivity in the Rh(<scp>i</scp>)-catalyzed intermolecular transannulation of 1,2,3-thiadiazoles with phenylacetylene
作者:Marina A. Tokareva、Indrek Pernik、Barbara A. Messerle、Tatiana V. Glukhareva、Sinead T. Keaveney
DOI:10.1039/d3cy00290j
日期:——
Despite the growing use of denitrogenative reactions of 1,2,3-thiadiazoles in heterocycle synthesis, the origin of the varied reactivity and divergent regioselectivity observed in their transannulation reactions is not well understood. To address this limitation, systematic studies on the reactivity and regioselectivity in the Rh(I)-catalyzed intermolecular transannulation between a range of substituted