The influence of boric acid or phenylboronic acid on thermal conversion of levoglucosan in acidic sulfolane was studied. Although levoglucosan was converted to levoglucosenone, furfural and 5-hydroxymethyl furfural (total yield: 40 mol%) at 200 8C in sulfolane containing 0.1 wt% H 2 SO 4 , addition
β¦ LIBER β¦
Complex formation of 1-methylcyclohexylhydroper oxide with esters of boric acid
β Scribed by M. N. Puring; V. M. Potekhin; V. A. Itskovich; V. B. Lebedev
- Publisher
- Springer US
- Year
- 1975
- Tongue
- English
- Weight
- 313 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0021-9037
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## Abstract The boric acidβcatechol system in aqueous solutions has been studied by means of ^11^B, ^1^H and ^13^C NMR over wide ranges of concentration and pH. ^11^B spectra show a striking difference between the complexation possibilities of dilute and more concentrated solutions of boric acid. B