79965-51-8Relevant academic research and scientific papers
(Z)-AND (E)-1-CHLORO-1,2-BIS(PHENYLSULPHONYL)ETHYLENES: SYNTHONS OF BIS(PHENYLSULPHONYL)ACETYLENE AND OF TERMINAL ACETYLENES IN CYCLOADDITION REACTIONS
Cossu, Sergio,Lucchi, Ottorino De
, p. 569 - 576 (2007/10/02)
The cycloaddition reaction of both isomeric 1-chloro-1,2-bis(phenylsulphonyl)ethylenes 1 leads to the expected Diels-Alder adducts with a number of dienes.The (Z)-isomer is more reactive, but the adducts are dehydrochlorinated with more difficulty and in lower yields than the adducts derived from the cycloaddition of the (E)-isomer.The dehydrochlorinated products are bis(phenylsulphonyl)alkenes which formally derive from the cycloaddition of the hitherto unknown bis(phenylsulphonyl)acetylene.These compounds undergo addition-elimination reaction with Grignard reagents; the products, desulphonylated by sodium amalgam, can be considered as the Diels-Alder adducts of terminal acetylenes.
KETENE-ANTHRACENE ADDUCT, A PRECURSOR OF SUBSTITUTED ACETYLENES
Tarnchompoo, Bongkoch,Thebtaranonth, Yodhathai,Utamapanya, Suchada,Kasemsri, Prapani
, p. 1241 - 1242 (2007/10/02)
The ketene-anhracene adduct 1 serves as a good precursor in the synthesis of substituted acetylenes, in wich the key step is the retro Diels-Alder reaction.
