Isolation of isoprenoid acids from a California petroleum
作者： J. Cason , D.W. Graham
DOI: 10.1016/S0040-4020(01)82217-1
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摘要: Abstract By sequences involving fractional distillation, thiourea adduction, gas chromatography and crystallization of solid derivatives, there have been isolated from the naphthenic acids a California petroleum four acyclic isoprenoid structure: 2,6,10-trimethylhendecanoic acid, 3,7,11-trimethyldodecanoic 2,6,10,14-tetramethylpentadecanoic 3,7,11,15-tetramethylhexadecanoic acid. Structures were deduced by interpretation spectra confirmed comparison with samples synthetic acids. Starting material for synthesis C 14 acid was farnesol, while phytol starting 19 20 No optical rotation could be observed petroleum. In mass spectrometry amides these acids, in addition to set fragments containing amido grouping, also complete irons nitrile grouping.
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