115525-35-4Relevant articles and documents
The Rearrangement of a Tetrahydrobiphenylene Derivative to a Bridged Benzocycloheptene
Barton, John W,Howard, Judith A. K.,Shepherd, Michael K.,Stringer, Andrew M.
, p. 2443 - 2446 (2007/10/02)
Alkaline hydrolysis of the cycloadduct of benzocyclobutene with 2H-pyran-2-one gives 8-hydroxy-4a,5,8,8a-tetrahydrobiphenylene-5-carboxylic acid (7) which undergoes an acid-catalysed rearrangement to the lactone of 6,9-dihydro-10-hydroxy-5,9-methano-5H-be