The structure of thujic acid: 7,7 dimethylcycloheptatriene-3-carboxylic acid

✍ Scribed by R.E. Davis; A. Tulinsky

• Book ID: 104213298
• Publisher: Elsevier Science
• Year: 1962
• Tongue: French
• Weight: 325 KB
• Volume: 3
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)71732-1

✦ Synopsis

FOR years, three structures have been considered for tropilidene: the norcaradiene, the planar cycloheptatriene and the non-planar cycloheptatriene.2'3'4 For the resolution of this problem, thujic acid, as an appropriate derivative, seemed particularly suitable for an X-ray crystallographic structure determination. Chemical studies on thujic acid itself suggest a cycloheptatriene type system, but these studies are by no means unequivocal. 5 However, N.M.R. does support such a system. 396 The N.M.R.