On the irrelevance to the norcaradiene problem of conrow's “eucarvone enol triphenylmethyl ether”

✍ Scribed by W.von E. Doering; M.R. Willcott III

• Book ID: 104212575
• Publisher: Elsevier Science
• Year: 1962
• Tongue: French
• Weight: 180 KB
• Volume: 3
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)70928-2

✦ Synopsis

NORCARADIENE was one of the hypothetical valence-tautomeric structures considered for tropilidene and its derivatives almost from the beginning. 1,2,3 But, as n. m. r. spectroscopy made it possible to exclude this structure for tropilidene 4 and "norcaradiene carboxylic acid, 'I 3 and as no unequivocally defined pair of molecules having the norcaradiene-cycloheptatriene relationship emerged, a serious consideration of the structure became less and less reasonable, at least, in uncomplicated cases. However, two years ago Conrow reported "the isolation and characterization of such a compound which exists in the norcaradiene valence tautomer. " 5 The structure of this substance,