Samples of O-(2-hydroxypropyl)derivatives of cyclomaltoheptaose (beta-cyclodextrin) with increasing substitution were prepared by withdrawing aliquots at different times from a reaction mixture containing cyclomaltoheptaose and an excess of (S)-propylene oxide in 0.39 M aqueous sodium hydroxide. The
Substitution in .beta.-cyclodextrin directed by basicity: preparation of 2-O- and 6-O-[(R)- and (S)-2-hydroxypropyl] derivatives
โ Scribed by Rao, C. Trinadha; Lindberg, Bengt; Lindberg, Johan; Pitha, Josef
- Book ID
- 120228128
- Publisher
- American Chemical Society
- Year
- 1991
- Tongue
- English
- Weight
- 393 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0022-3263
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Structural characteristics of 0-(2-hydroxypropyl)cellulose samples, namely the molar substitution (mol. subst.), the total degree of substitution (d.s.), and the individual degree of substitution of hydroxyl groups on the glucose residues for a wide mol. subst . range of samples were determined
Regio-and stereo-selective reduction of the double bonds in conjugated ketones with numerous reducing agents under various conditions have been studied'. The reactions usually afford mixtures of products, the compositions of which depend on the reagent, the catalyst, the solvent, the pH of the mediu