Photochemistry of 4, 4-dimethyl-1-methylene-2-cyclohexene, a methylene analog of a cyclohexenone

WG Dauben, WA Spitzer

Index: Dauben,W.G.; Spitzer,W.A. Journal of the American Chemical Society, 1968 , vol. 90, p. 802

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Citation Number: 9

Abstract

Reaction of the ketone 2 with methylenetriphenylphosphorane gave 4, 4-dimethyl-l- methylene-2-cyclo-hexene as a colorless liq~ id:~ bp 131-133'; 232 mp (e 13,400); 7: 3030, 2990, 1640, 1600, 1470, 1460, 1360, 880 cm-'; nmr (7, CC1,) AB quartet centered at 4.34 (2 H,-CH= CH-, 6 A-8B= 0.33 ppm, JAB= 9 cps), 5.32 br singlet (2H,= CH2), triplet centered at 7.67 (2 H, ring CH2, JAB=-7 cps), triplet centered at 8.52 (2 H, ring CH2, JAB= 7 cps), ...