82695-74-7Relevant academic research and scientific papers
A Novel Catalyst-Free Synthesis of 2,2-Diaryl Enamides from Stilbenes via a Nitrene Transfer Reaction
Zhang, Yuanyuan,Ye, Wenjing,Zhang, Hui,Xiao, Xiao
supporting information, p. 5720 - 5724 (2019/08/26)
A novel catalyst-free nitrene transfer reaction between stilbenes and iminoiodinanes was achieved for the first time, which provides an efficient and environmentally friendly way to access variously substituted 2,2-diaryl enamides under mild conditions. Mechanistic investigations suggested the reaction proceed via nitrene transfer and aromatic rearrangement with iminoiodinane also acting as a Lewis acid, benefitting the ring-opening of the aziridine intermediate.
On the Preparation of Conjugated Polyenes with Paracyclophanyl End Groups
Heirtzler, Fenton R.,Hopf, Henning,Lehne, Verena
, p. 1521 - 1528 (2007/10/02)
Model substances for oligomeric systems based on the incorporation of paracyclophane into the repeating unit are linear polyenes bearing a paracyclophanyl residue in the terminal positions.The preparation of the polyenes 2a-c is described.In addition to the characterisation as diarylpolyenes, consideration of model compounds revealed that the paracyclophanyl residues interact with pendent substituents according to a magnetic anisotropic mechanism. - Keywords: Paracyclophane / Polyenes / Oligomers / Shielding / Anisotropy
REACTION OF ARYLMETHANESULFONYL AND STYRYLMETHANESULFONYL CHLORIDES WITH TRIETHYLAMINE
Nakayama, Juzo,Tanuma, Mitsuru,Honda, Yoshiko,Hoshino, Masamatsu
, p. 4553 - 4556 (2007/10/02)
A series of arylmethanesulfonyl chlorides were treated with triethylamine in THF to give stilbenes in excellent yields.Workup of the mixtures below 10 deg C permits isolation of stilbene episulfones which on warming decompose to yield the corresponding stilbenes stereospecifically.Application of the reaction to 9-fluorenylsulfonyl chloride affords bifluorenylidene, while trans-styrylmethanesulfonyl chloride gives 4,5-dihydro-4,5-diphenylthiepin 1,1-dioxide and 1,6-diphenylhexatriene.
