33739-66-1Relevant academic research and scientific papers
Diels-alder reaction and double phenylation in reaction of thiophenes with diphenyliodonium triflate
Zhang, Bian-Xiang,Nuka, Takato,Fujiwara, Yuzo,Yamaji, Teizo,Hou, Zhaomin,Kitamura, Tsugio
, p. 199 - 206 (2007/10/03)
The reaction of 2,5-dimethylthiophene with diphenyliodonium triflate in the presence of N-phenylmaleimide and a catalytic amount of Cu(OAc)2 gave 1:1 and 1:2 cycloadducts with N-phenylmaleimide. The similar reactions of 2,5-bis(trimethylsilyl)thiophene, 3-phenylthiophene, and thiophene afforded 2,5-diphenylthiophene, 2,3,5-triphenylthiophene, and 2,5-diphenylthiophene, respectively. The cycloadducts and 2,5-diphenylated thiophenes are considered to be formed via S-phenylation of thiophenes affording 1-phenylthiophenium triflates.
SO-Photoextrusion of 7-Thiabicyclohept-2-ene 7-Oxides
Thiemann, Carolin,Thiemann, Thies,Li, YuanQiang,Sawada, Tsuyoshi,Nagano, Yoshiaki,Tashiro, Masashi
, p. 1886 - 1893 (2007/10/02)
The photoextrusion of the SO-bridge of 7-thiabicyclohept-2-ene 7-oxides is discussed.An analysis of all the major by-products in the exemplary case of the photo reaction of 3a is given.The existence of intermediate dienes 4 has been established.Dat
Alkynes and Cumulenes, XIII. - Diels-Alder Additions of Double Bond Dienophiles to Conjugated Bis-allenes
Schoen, Georg,Hopf, Henning
, p. 165 - 180 (2007/10/02)
The Diels-Alder addition of 1,2,4,5-hexatetraene (1) to double bond dienophiles (maleic anhydrides, maleimides, quinones, azo group containing and acyclic dienophiles) provides only cycloadducts.The stereochemistry of this reaction has been investig
