290-79-9Relevant articles and documents
Reactions of 1,1-Dichloroethene with elemental chalcogens in the system hydrazine hydrate–alkali
Levanova,Nikonova,Grabel’nykh,Russavskaya,Albanov,Rozentsveig,Korchevin
, p. 1070 - 1071 (2016)
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1,4-Dichalcogenins: Synthesis from Dichloroethenes and Elemental Chalcogens in a Hydrazine Hydrate–Potassium Hydroxide System
Bogdanova, I. N.,Grabelnykh, V. A.,Istomina, N. V.,Korchevin, N. A.,Nikonova, V. S.,Rozentsveig, I. B.,Russavskaya, N. B.,Sosnovskaya, N. G.
, p. 814 - 819 (2021/06/26)
Abstract: A possibility of the synthesis of 1,4-dichalcogenins by the reaction of vinylidene chloride or 1,2-dichloroethene with elemental chalcogenes in a hydrazine hydrate–KOH system was studied. When vinylidene chloride was used, the maximum yield of 1,4-diselenin was 38%; 1,4-ditellurine was not formed. Diselenin was obtained from 1,2-dichloroethene in 45% yield, while ditellurine was prepared in 21% yield. A plausible mechanism for the formation of dichalcogenin molecules was proposed, which makes it possible to explain the differences in the behavior of 1,1- and 1,2-dichloroethenes in the reaction with potassium telluride. When two chalcogenes were introduced into the reaction, 1,4-dichalcogenins with different chalcogen atoms were obtained with yields of up to 7%.
Selective Metalations of 1,4-Dithiins and Condensed Analogues Using TMP-Magnesium and -Zinc Bases
Castelló-Micó, Alicia,Nafe, Julia,Higashida, Kosuke,Karaghiosoff, Konstantin,Gingras, Marc,Knochel, Paul
supporting information, p. 360 - 363 (2017/04/21)
TMPMgCl·LiCl and TMPZnCl·LiCl allow facile magnesiation and zincation, respectively, of the 1,4-dithiin scaffold, producing polyfunctionalized 1,4-dithiins. A subsequent metalation of these S-heterocycles can also be achieved with the same TMP bases, lead
