Rhodium-catalyzed hydrothiolation of alkynes with thiols for construction of sulfur-containing π-conjugated systems
作者:Aya Yoshimura、Akihiro Nomoto、Akiya Ogawa
DOI:10.1007/s11164-014-1639-0
日期:2014.7
To synthesize sulfur-containing π-conjugated polymers, reaction conditions for rhodium-catalyzed hydrothiolation of terminal alkynes with arenethiols are optimized in detail. Under the optimized conditions, rhodium-catalyzed hydrothiolation of terminal alkynes proceeds regio- and stereoselectively to afford the corresponding vinyl sulfides via an anti-Markovnikov and syn-addition process. Then, the rhodium-catalyzed hydrothiolation is applied to polymerization of 2,5-diethynylthiophene with benzene-1,4-dithiol, which successfully provides sulfur-containing π-conjugated polymers with excellent regio- and stereoselectivities.
HIROI, KUNIO;OTSUKA, MASAHIKO;SATO, SHUKO, CHEM. LETT., 1985, N 12, 1907-1910
作者:HIROI, KUNIO、OTSUKA, MASAHIKO、SATO, SHUKO
DOI:——
日期:——
REGIOSELECTIVE SULFENYLATION OF OXIME DIANIONS. A NOVEL AND USEFUL METHOD FOR THE REGIOSELECTIVE RING CLEAVAGE
作者:Kunio Hiroi、Masahiko Otsuka、Shuko Sato
DOI:10.1246/cl.1985.1907
日期:1985.12.5
Treatment of the dianions of cyclic ketoximes with diphenyl disulfide underwent a regioselective sulfenylation at the syn α-carbons. Regioselective alkylation of cyclic ketoxime dianions, followed by sulfenylation with diphenyl disulfide, produced α-alkyl-α′-phenylsulfenyl ketoximes. A Beckmann fragmentation of these sulfenylated ketoximes gave ring cleaved products. This procedure provides a synthetically