Proceedings of SPIE - The International Society for Optical Engineering.
Society of Photo-Optical Instrumentation Engineers, Bellingham, WA, United States.
Vol. 2965.
1996.
P. 113-116
Hydrogenation of 9-pyridylmethylene(aza)fluorenes and 9-benzylidene-4-azafluorene at 250°C and pH2 = 130 atm in the presence of Re2S7 as a catalyst occurs preferably at the exocyclic double bond of the fulvene fragment to yield pyridyl-9-(aza)fluorenylmethanes. © 1996 Plenum Publishing Corporation.