Synthesis of trans-1,2-diphenyl-3,4-bis[
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Jeffrey J. Doney; Chin H. Chen; Henry R. Luss
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Article
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1982
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Elsevier Science
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French
β 225 KB
The reaction of phenyl lithium acetylide (a) with 2,6-drphenylpyrylium perchlorate ( 2) is solvent dependent. With diethyl ether as solvent, the isolated product differed from that previously reported and is reassigned as 2,6-diphenyl-4-phenylacetylenyl\_4H\_-pyran (2). On the other hand, in TBF the