Synthesis and Electrochemical Properties of 2,2’-Biguaiazulene-Based 1,2-Dithiin and Thiophene
摘要:
The synthesis of diguaiazuleno[3,2-c:2',3'-e][1,2]dithiin was achieved by the reaction of 2,2'-biguaiazulene with disulfur dichloride/imidazole as a sulfuration reagent. Thermolysis of the dithiin afforded the corresponding desulfurized compound, diguaiazuleno[3,2-b:2',3'-d]thiophene. Cyclic voltammetry of the S-heterocycles showed one reversible wave at the reduction region, respectively.
2-methylthioguaiazulene and 3,6,9-trimethylazuleno[4,5-b]thiophene, have been obtained and characterized, along with known 3,5,8-trimethylazuleno[6,5-b]thiophene and 2,2′-biguaiazulenyl, by the sulfurdehydrogenation of guaiene.