Synlett 2025; 36(12): 1765-1769
DOI: 10.1055/a-2579-4076
letter

Divergent Approach to the Synthesis of 2-Aryl-5-(thiophen-2-yl)-1,3,4-oxadiazoles and -1,3,4-thiadiazoles

Anna L. Samsonenko
a   Laboratory of New Organic Materials, Omsk State Technical University, Mira Ave. 11, 644050 Omsk, Russian Federation
b   Department of Organic Chemistry, Omsk F. M. Dostoevsky State University, Mira Ave. 55A, Omsk 644077, Russian Federation
,
Anastasia S. Kostyuchenko
a   Laboratory of New Organic Materials, Omsk State Technical University, Mira Ave. 11, 644050 Omsk, Russian Federation
b   Department of Organic Chemistry, Omsk F. M. Dostoevsky State University, Mira Ave. 55A, Omsk 644077, Russian Federation
,
Tatyana Y. Zheleznova
a   Laboratory of New Organic Materials, Omsk State Technical University, Mira Ave. 11, 644050 Omsk, Russian Federation
b   Department of Organic Chemistry, Omsk F. M. Dostoevsky State University, Mira Ave. 55A, Omsk 644077, Russian Federation
,
Evgenii B. Uliankin
a   Laboratory of New Organic Materials, Omsk State Technical University, Mira Ave. 11, 644050 Omsk, Russian Federation
b   Department of Organic Chemistry, Omsk F. M. Dostoevsky State University, Mira Ave. 55A, Omsk 644077, Russian Federation
,
Sergei A. Chernenko
a   Laboratory of New Organic Materials, Omsk State Technical University, Mira Ave. 11, 644050 Omsk, Russian Federation
b   Department of Organic Chemistry, Omsk F. M. Dostoevsky State University, Mira Ave. 55A, Omsk 644077, Russian Federation
,
b   Department of Organic Chemistry, Omsk F. M. Dostoevsky State University, Mira Ave. 55A, Omsk 644077, Russian Federation
,
b   Department of Organic Chemistry, Omsk F. M. Dostoevsky State University, Mira Ave. 55A, Omsk 644077, Russian Federation
,
a   Laboratory of New Organic Materials, Omsk State Technical University, Mira Ave. 11, 644050 Omsk, Russian Federation
b   Department of Organic Chemistry, Omsk F. M. Dostoevsky State University, Mira Ave. 55A, Omsk 644077, Russian Federation
› Author Affiliations

This work was supported by the Russian Science Foundation (Grant No. 20-73-10043).


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Abstract

The reaction of 2-(chloromethyl)-1,3,4-thiadiazoles and -1,3,4-oxadiazoles with thioacetic acid in the presence of DIPEA led to the formation of S-[(1,3,4-thiadiazol-2-yl)methyl]- and [(1,3,4-oxadiazol-2-yl)methyl]ethanethioate. A series of 2-thienyl-substituted 1,3,4-oxadiazoles and 1,3,4-thiadiazoles were obtained by the reaction of 3-chloroacrylaldehydes with (1,3,4-thiadiazol-2-yl)- and (1,3,4-oxadiazol-2-yl)methanethiols formed in situ from S-[(1,3,4-thia(oxa)diazol-2-yl)methyl]ethanethioate in methanol in the presence of K2CO3. The photophysical properties of the synthesized compounds were studied.

Supporting Information



Publication History

Received: 01 March 2025

Accepted after revision: 09 April 2025

Accepted Manuscript online:
09 April 2025

Article published online:
28 May 2025

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