98323-19-4Relevant articles and documents
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