Indian Journal of Chemistry Vol. 428, April 2003, pp. 863-872 ... Synthesis of optically active benzocyclobutene and biphenylene based ... Sambasivarao Kotha* & Somnath Halder Department of Chemistry, Indian Institute of Technology-Bombay, Mumbai, 400 076, India Phone: +9 1-22-257671 60, Fax: +9 1-22-25723480, Email : srk @chem.iith.ac. in Received 12 August 2002: accepted 28 October 2002 ... Optically active benzocyclobutene and biphenylene ...