56151-15-6Relevant academic research and scientific papers
The Action of Trifluoromethanesulfonic Acid on Naphthalene
Launikonis, Anton,Sasse, Wolfgang H. F.,Willing, Ian R.
, p. 427 - 440 (2007/10/02)
Trifluoromethanesulfonic (triflic) acid reacts with naphthalene at room temperature to give a complex mixture from which five products have been isolated and identified as follows: (E)-3-benzylidene-2,3-dihydro-1H-benzindene (2) (yield 15-20percent), 1,2,3,4-tetrahydroanthracene (7) (c. 0.5percent), 4-phenyl-1,2-dihydroanthracene (8), 3,4-dihydro-1,2'-binaphthyl (9a'), 4-(2-naphthyl)-1,2-dihydroanthracene (10) .Also formed is (Z)-2-benzylidene-1,3-dihydro-1H-benzindene (6) which is formed reversibly from (2) by the action of triflic acid.Mechanisms are proposed for the formation of these products.
