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Thermal transformations of allyl 2-thienyl sulfide and selenide

✍ Scribed by N. A. Korchevin; É. N. Sukhomazova; N. V. Russavskaya; L. P. Turchaninova; M. V. Sigalov; L. V. Klyba; É. N. Deryagina; M. G. Voronkov

Publisher
Springer US
Year
1991
Tongue
English
Weight
349 KB
Volume
27
Category
Article
ISSN
0009-3122

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✦ Synopsis

In the gas phase at 350-410~ allyl 2-thienyl sulfide is converted to thiophene-2-thiol, di(2-thienyl) sulfide, and 2-methylthieno[2,3-b]thiophene. In the presence of acetylene thieno [2,3-b]thiophene is formed in addition to these products. Allyl 2-thienyl selenide is converted quantitatively to 2,3dihydro-2-methylselenopheno [2,3-b]thiophene during fractional distillation in vacuo. Thiophene, di(2-thienyl) selenide, di(2-thienyl) diselenide, thiophene-2-selenol, and 2-methylselenopheno/2,3b]thiophene are formed in addition to these compounds in the thermolysis of allyl thienyl selenide in the gas. phase. In the presence of acetylene the thermal decomposition of allyl thienyl selenide is accompanied by the formation of selenophene.

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