Photochromic dihetarylethenes. 13. Optimization of conditions for the acylation of 2,5-dimethylthiophene with squaric acid dichloride

Photochromic dihetarylethenes. 13. Optimization of conditions for the acylation of 2,5-dimethylthiophene with squaric acid dichloride Full article

Journal

Russian Chemical Bulletin
ISSN: 1573-9171 , E-ISSN: 1066-5285

Output data

Year: 2002, Volume: 51, Number: 8, Pages: 1510-1514 Pages count : 5 DOI: 10.1023/a:1020923309195

Authors

Krayushkin M.M. ¹ , Shirinian V.Z. ¹ , Belen"kii L.I. ¹ , Shadronov A.Yu. ¹ , Vorontsova L.G. ¹ , Starikova Z.A. ²

Affiliations

1	Russian Academy of Sciences, N. D. Zelinsky Institute of Organic Chemistry, 47 Leninsky prosp., 119991, Moscow, Russian Federation
2	Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, 28 ul. Vavilova, 119991, Moscow, Russian Federation

The conditions for acylation of 2,5-dimethylthiophene with squaric acid dichloride were optimized, and 3,4-bis(2,5-dimethylthiophen-3-yl)cyclobut-3-ene-1,2-dione was obtained in good yield. X-ray diffraction analysis demonstrated that the by-product has the structure of 1a,1b-dichloro-5-(2,5-dimethylthiophen-3-yl)-3-hydroxy-4,5a-dimethyl-1b,4a,5,5a-tetrahydro-1aH-1-thiacyclopropa[a]pentalen-2-one.

Krayushkin M.M. , Shirinian V.Z. , Belen"kii L.I. , Shadronov A.Y. , Vorontsova L.G. , Starikova Z.A.
Photochromic dihetarylethenes. 13. Optimization of conditions for the acylation of 2,5-dimethylthiophene with squaric acid dichloride
Russian Chemical Bulletin. 2002. V.51. N8. P.1510-1514. DOI: 10.1023/a:1020923309195 WOS Scopus OpenAlex

Web of science:	WOS:000179677800017
Scopus:	2-s2.0-0036432054
OpenAlex:	W2951296010

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OpenAlex	8
Scopus	8
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