119882-10-9Relevant academic research and scientific papers
Preparation method of cyclic (1,3)-dithiolane derivatives
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Paragraph 0055; 0056, (2017/07/20)
The invention discloses a preparation method of cyclic (1,3)-dithiolane derivatives. According to the preparation method, ethylene trithiocarbonate and active methylene compounds are taken as the raw materials to synthesize cyclic (1,3)-dithiolane derivatives in the presence of an imidazolium acetate ionic liquid. The preparation method has the advantages that an ionic liquid is taken as the catalyst, the reaction conditions are mild; the operation is simple and safe; high conversion rate and yield are obtained; and the preparation method has an important meaning for synthesis of heterocyclic compounds containing sulfur.
Heterocyclic Substituted Arendiazonium Salts with a Long-wave-length Range of Sensitivity - Part 1: Monomethins and Azamethins
Fanghaenel, E.,Kuehnemund, K.-H.,Richter, A. M.
, p. 590 - 606 (2007/10/02)
Two new types of arendiazonium salts have been synthesized.In these compounds a heterocycliden ring is bridged through a methine group (8a-o) or a nitrogen (11a-c) with the 4-position of a benzene diazonium group.Both types show sensitivity towards normal
