Organocatalytic selective coupling of episulfides with carbon disulfide for the synthesis of poly(trithiocarbonate)s and cyclic trithiocarbonates

Abstract

Selective coupling of CS2 with episulfides affords perfectly alternating poly(trithiocarbonate)s or cyclic trithiocarbonates upon the onium salts used.

Development of an Adhesive Gel System for Changing the Structure and Properties of Its Adhesive Joint via Reactions with Amine Molecules after Adhesion

“…The DTCM polymer, which seamed the gel networks of the pAAm gels, had cyclic trithiocarbonate substitutes. Cyclic trithiocarbonate molecules have high reactivity, as previously reported by others. , They were used to change the chemical structures and adhesive gel joints.…”

“…Cyclic trithiocarbonate molecules have high reactivity, as previously reported by others. 38,39 They were used to change the chemical structures and adhesive gel joints.…”

Synthesis and applications of the sulfur containing analogues of cyclic carbonates

“…Nevertheless, the corresponding polymers can be obtained by other means, as has been demonstrated by Gnanou/Feng and co-workers. 120 In this work, the obtained polymers also underwent complete unzipping when treated with radicals or under UV light irradiation to form the cyclic trithiocarbonates. This unexpected activity was exploited to prepare degradable polymers using oligotrithiocarbonates as self-immolating linkers between dithiol alkyl precursors.…”

“…28c). 120 In this metal-free process, the cyclic trithiocarbonates can be selectively obtained by reaction of the thiirane and carbon disulfide using tetrabutylammonium fluoride (TBAF) at 80 °C. It was indicated that above 60 °C when using fluoride as nucleophile, back-biting reactions largely predominate over propagation, resulting in the formation of the cyclic product.…”

Catalyst-free, atom-economical and regioselective multicomponent polymerizations of diamines, CS2, and diepoxides toward functional polydithiourethanes

“…33 To our knowledge, few CS 2 -based polymerizations have been reported except CS 2 /diamine polymerization, 19 CS 2 /epoxide copolymerization, 28 and CS 2 /episulfide copolymerization. 29 Moreover, Endo and other groups have reported the polyaddition between diamines and bifunctional five-membered cyclic dithiocarbonates, which are synthesized from the reaction between CS 2 and diepoxides. 30,34,35 Herein, we report a new MCP of diamines, CS 2 , and diepoxides to produce functional polydithiourethanes with various molecular structures.…”