130817-07-1Relevant academic research and scientific papers
STUDIES ON BENZOTHIOPHENES
Volz, Wolfgang,Voss, Juergen
, p. 429 - 432 (2007/10/02)
Attempts for the synthesis of 5-tert-butylbenzothiophene 1c are described.The preparation of pure 1c by heating of sulfoxide 5 with alumina failed.However 1c could be generated in situ and trapped with N-phenylmaleimide 6.Under the conditions of mass spectroscopic measurements the cycloadducts of 1c with 6 underwent a retro-Diels-Alder reaction which proves the existence of free 1c in the gas-phase.
