Tetrahedron letters

Characterization of 4-(2, 3-diphenylcyclopropenylidene) cyclohexa-2, 5-dienone. Highly polarized 6, 7-diphenyl [3.6] q́uinaren-3-one

K Takahashi, K Ohnishi, K Takase

Index: Takahashi, Kazuko; Ohnishi, Keiichi; Takase, Kahei Tetrahedron Letters, 1984 , vol. 25, # 1 p. 73 - 76

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Citation Number: 6

Abstract

The compound 3: greenish yellow needles, mp. 214∼5 °C (decomp.) from acetonitrile; IR (KBr) 3440∼3280, 1835, 1600, 1580, 1410, 1290, 1163, and 1077 cm −1 ; UV-VIS (MeCN)λ max 272 nm (log e 4.27), 342 (4.78); 1 H NMR (Table 1); 13 C NMR 50.3 MHz (in CD 3 CN) (δppm) 153.43(C-6,7), 154.62 (C-8), 167.77 (C-3), 118.68 (C-2,4), 140.69 (C-1,5), 112.33 (C-9), 121.39(Ph-ipso), 136.32 (Ph-ortho), 131.40 (Ph-meta), 138.74 (Ph-para); Anal. ...