... A NOVEL INDENE SYNTHESIS FROM N-PHENYL-1,1-DIPHENYL-2-ETHYLBUT-3-YNYLAMINE John Ackroyd, Keith A Pover and Feodor Scheinmann* The Ramage Laboratories, Department of Chemistry and Applied Chemistry, University of Salford, Salford, M5 4WT, England. ... References 1. HE Schoemaker, Tj. Boer-Terpstra, J. Dijkink, WN Speckamp, Tetrahedron, 36,143(1980). 2. KA Pover and F. Scheinman, JCS Perkin 1. 2338 (1980). ...