1,2:4,6- and 1,2:3,6-Di-O-isopropylidene-d-mannitol
✍ Scribed by János Kuszmann; Éva Tomori; Péter Dvortsák
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 334 KB
- Volume
- 132
- Category
- Article
- ISSN
- 0008-6215
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Three different methods of acetonation of D-mannitol using (a) acetone and zinc chloride, (6), 2,2\_dimethoxypropane, l,Zdimethoxyethane, and tin(I1) chloride, and (c) 2-methoxypropene, N, N-dimethylformamide, and p-toluenesulfonic acid were studied in detail and compared, using gas-liquid chromatog
The structures of the title compounds (2b and 3) have been investigated in the solid state by X-ray methods. The crystals of 2b are monoclinic, space group P2,, and of 3 orthorhombit, space grtup P2,2,2,. The cell dimensions are: for 2b, a = 9.910(2), b = 11;745W, c = 11.810(3) A, /3 = 97.32(l)"; a
1,2:5,6-Di-0-isopropylidene-o-mannitol (1) is the most important source of o-glyceraldehyde derivatives which are usedIe widely in synthesis. The formation of 1 from o-mannitol (2) has been studied severally"5. All of the syntheses require the separation of 1 from the accompanying 1,2:3,4:5,6\_tria
Partial benzoylation of 2,1':4,6-di-O-isopropylidenesucrose (1) with 1.1 mol. equiv. of benzoyl chloride in pyridine gave the 6'-benzoate 2 (13%), 3'-benzoate 3 (7%), and 3',6'-dibenzoate 4 (10%); 51% of 1 was recovered.