Synthesis of -1,2-diphenyl-3,4-bis[4-(2,6-diphenyl-4- pyranylidenyl)]cyclobutane: correction and structure proof |
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Authors: | Jeffrey J Doney Chin H Chen Henry R Luss |
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Institution: | Research Laboratories, Eastman Kodak Company, Rochester, New York 14650, USA |
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Abstract: | The reaction of phenyl lithium acetylide () with 2,6-diphenylpyrylium perchlorate () is solvent dependent. With diethyl ether as solvent, the isolated product differed from that previously reported and is reassingned as 2,6-diphenyl-4-phenylacetylenyl-4-pyran (). On the other hand, in THF the title compound () was obtained; its structure confirmed by single-crystal x-ray crystallography. |
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