72448-17-0Relevant articles and documents
A novel method for the oxidation of thiophenes. Synthesis of thiophene 1,1-dioxides containing electron-withdrawing substituents
Nenajdenko,Moiseev,Balenkova
, p. 2241 - 2247 (2004)
A novel method for the synthesis of thiophene 1,1-dioxides by oxidation of substituted thiophenes with trifluoroperoxyacetic acid was developed. The effect of the solvent nature on the course of the reaction was studied and optimum conditions for the oxid
Azepine- or Azocine-Embedded Hexabenzocoronene Derivatives as Nitrogen-Doped Saddle or Saddle-Helix Nanographenes
An, Peng,He, Run-Ying,Li, Ranran,Ma, Bin,Xiao, Ming-Jun,Zhang, Bin,Zhang, Yi-Kang
supporting information, p. 24478 - 24483 (2021/10/19)
Two novel nitrogen-doped, hexa-peri-hexabenzocoronene (HBC)-based nanographenes (NGs) 1 and 2 bearing an azepine and an azocine at the fjord region, respectively, were synthesized and characterized. Notably, structure 1 was synthesized by Diels–Alder reac
Sulfur dioxide prodrugs: Triggered release of SO2 via a click reaction
Wang, Wenyi,Ji, Xingyue,Du, Zhenming,Wang, Binghe
supporting information, p. 1370 - 1373 (2017/02/05)
Sulfur dioxide (SO2) is being recognized as a possible endogenous gasotransmitter with importance on par with that of NO, CO, and H2S. Herein we describe a series of SO2 prodrugs that are activated for SO2 relea
Octachloroazulene
Lou, Yan,Chang, Joanne,Jorgensen, Jeffrey,Lemal, David M.
, p. 15302 - 15307 (2007/10/03)
The title compound, the first perhaloazulene, has been synthesized from hexachlorobutadiene and cyclopentadiene. Further chlorination of 1,3,4,5,6,7-hexachloroazulene results in addition, rot substitution, under electrophilic as well as free radical conditions. Radical chlorination of the hexachloro-azulene affords in good yield a single decachlorotetrahydroazulene. Treatment of this Cl10 compound with one equiv of a phosphazene base gives a nonachlorodihydroazulene, but the addition of a second equiv results in dechlorination to 1,2,3,4,5,6,7-heptachloroazulene as well as dehydrochlorination to octachloro-azulene. The former azulene is obtained cleanly from the Cl9 compound with acid catalysis or by reduction with mercury. In the presence of calcium carbonate, however, the Cl9 intermediate yields the dark green octachloroazulene. Although octachloronaphthalene is readily converted into its octafluoro counterpart, the isomeric octachloroazulene is far too sensitive to undergo the analogous transformation.
Annelations with Tetrachlorothiophene 1,1-Dioxide
Raasch, Maynard S.
, p. 856 - 867 (2007/10/02)
Tetrachlorothiophene 1,1-dioxide is a reactive, cheletropic Diels-Alder reagent.It has been used to annelate, with loss of sulfur dioxide, a large variety of olefinic compounds to form 1,2,3,4-tetrachloro-1,3-cyclohexadiene derivatives.Dehydrochlorination of these forms 1,2,4-trichloro aromatic compounds.Both double bonds in thiophene and N-methylpyrrole are annelated.Addition of tetrachlorothiophene dioxide to acyclic 1,5-dienes, which may contain a heteroatom, provides a facile synthesis of tetrachloroisotwistenes (51) and heteroisotwistenes (56) by a double Diels-Alder reaction.Acyclic 1,6-dienes lead to tetrachlorohomoisotwistene (59) and heterohomoisotwistenes (61).By use of 1,5-cyclooctadiene, sym-dibenzocyclooctatetraene, and 1,5-cyclononadiene, the more complex carbocycles 62, 65, and 66 are generated.Tetrabromothiophene dioxide reacts like the tetrachloro compound.