64741-13-5Relevant academic research and scientific papers
An expedient synthesis of substituted tetraaryltetrabenzoporphyrins
Finikova,Cheprakov,Beletskaya,Vinogradov
, p. 261 - 262 (2007/10/03)
A simple route to tetraaryltetrabenzoporphyrins (Ar4TBPs) is developed; the procedure allows for the introduction of substituents on both benzo- and phenyl-rings and employs readily available, inexpensive components.
4-Bromo-2-sulfolenes. Butadienyl Cation Equivalents
Chou, Ta-shue,Hung, Su Chun,Tso, Hsi-Hwa
, p. 3394 - 3399 (2007/10/02)
4-Bromo-2-sulfolene and 4-bromo-3-methyl-2-sulfolene react with alkylcuprates to give direct substitution products, with vinyl- or phenylcuprates or sulfur-containing nucleophiles to give allylic substitution products, and with strongly basic nucleophiles to give elimination products.The allylic substitution products and the isomerized direct substitution products are precursors for substituted 1,3-butadienes.Thus, these 4-bromo-2-sulfolenes serve as butadienyl cation equivalents.
THE EFFECT OF SULFUR AND SELENIUM SUBSTITUTENTS ON THE REGIOCHEMISTRY OF DIELS-ALDER REACTIONS
Liotta, Charles L.,Verbicky, John W.
, p. 1395 - 1398 (2007/10/02)
2-Phenylthio-1,3-butadiene (1) and 2-phenylseleno-1,3-butadiene (2) have been generated in situ from their SO2 adducts and reacted with a series of unsymmetrical dienophiles.The regiochemical results have been analyzed in terms of qualitative perturbation
