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Proof for the origin of the branch hydroxymethyl carbon of D-apiose from carbon 3 of D-glucuronic acid

✍ Scribed by W.J. Kelleher; D. Baron; R. Ortmann; H. Grisebach


Book ID
115902524
Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
176 KB
Volume
22
Category
Article
ISSN
0014-5793

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The determination of the COOH substiuent
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## Abstract The carboxyl substituent effects for branched carboxylic acids have been determined by carbon‐13 Fourier ransform nuclear magnetic resonance of eighteen measured and reported branched acids. For α‐branched systems the substituent effects are Ξ± = 15.3 ppm, Ξ² = 2.6 ppm, Ξ³ = βˆ’1.9 ppm, Ξ΄ =