✦ LIBER ✦
ChemInform Abstract: A New Efficient Access to Glycono-1,4-lactones by Oxidation of Unprotected Itols by Catalytic Hydrogen Transfer with RhH(PPh3)4-Benzalacetone System.
✍ Scribed by I. ISAAC; G. AIZEL; I. STASIK; A. WADOUACHI; D. BEAUPERE
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 40 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0931-7597
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✦ Synopsis
A New Efficient Access to Glycono-1,4-lactones by Oxidation of Unprotected Itols by Catalytic Hydrogen Transfer with RhH(PPh 3 ) 4 -Benzalacetone System.
-Pentitols and hexitols which possess a plane of symmetry, e.g. (I), or a C-2 symmetry axis, e.g. (III), lead, with good yields, to the corresponding lactone obtained as a racemic mixture. The only exception is observed in the case of D-ribitol (IX), which epimerizes at C-2. The oxidation of symmetryless L-arabinitol (XII) gives the two expected lactones (XIII) and (XIV). -(ISAAC, I.;