1254181-48-0Relevant articles and documents
Regioselective electrophilic cyclization of o-ethynylbenzyl phenyl selenides to (Z)-1-methylidene-2-phenyl-1,3-dihydro-1H-benzo[c]selenophenium salts
Sashida, Haruki,Nakabayashi, Shoko,Suzuki, Hirokazu,Kaname, Mamoru,Minoura, Mao
scheme or table, p. 5395 - 5398 (2010/11/02)
o-Ethynylbenzyl phenyl selenides regioselectively reacted with trifluoromethanesulfonic acid to afford the (Z)-1-methylidene-2-phenyl-1,3- dihydro-1H-benzo[c]selenophenium salts as the major products during the 5-exo-dig mode cyclization in good yields together with minor E isomers. The structure of the major (Z)-selenophenium salt was established by the single crystal X-ray crystallographic analysis using a tert-butyl derivative.
