Anal. Calcd. for C ~ IWN ~ : N, 5.9. Found: N, 6.2. 943 '-Pyrenylidene) -fluorene -The condensation of 4.6 g. of the aldehyde with 3.3 g. of fluorene was carried out, using sodium ethoxide as catalyst.8 The yellow- orange fulvene (11) separated spontaneously from the solution, and melted after recrystavzation from xylene, butanol or glacial acetic acid at 210 . ... Anal. Calcd. for CmHla: C, 95.2; H, 4.8. Found: C. 94.9; H, 5.0. a-Phenyl-@-(3-pyrenyl)-acrylic Acid (111, ...
