Abstract: In this paper, we report the synthesis of novel cyclic trithiocarbonate 4,7-diphenyl-[1,3]-dithiepane-2-thione (DPDTT), based on the characteristics of structure of RAFT agent, combining with methods of synthesis of cyclic trithiocarbonates (methods of phase-transfer agent and anion-exchange resin).In the existence of radical initiator, DPDTT can be polymerized through ring-opening polymerization.
First, 1,4-diphenyibutane can be obtained by bromobenzene and 1,4-diphenylbutane at the present of natrium and diethyl ether A.Then 1,4-dibromo-1,4-diphentlbutane can be obtained by A and NBS at the existence of BPO and tetrachloro methane B. We use the phase transfer catalyst to prepare DPDTT: Tetrabutylammonium hydrogen sulfate ( TBAS) as phase-transfer agent. And last in the existence of radical initiatorAIBN, DPDTT will be ring-opening polymerized
The products A、B and rind-opening are characterized by 1H-NMR; the aim product is characterized by 1H-NMR、13C-NMR、infrared absorption spectrum、mass spectra and elemental analyses.
Key words: Cyclic Trithiocarbonate; RAFT agent ; Preparation;Characterization