Synthesis of [25,26,26,26,27,27,27-d7]-cholesterol
โ Scribed by Guo-Hua Chu; Pui-Kai Li
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- French
- Weight
- 294 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0022-2135
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Selective Halogen-Lithium Exchange Reaction of Bromine-Substituted 25, 26,27,28-Tetrapropoxycalix(4)arene (Ia). -The selective bromine-lithium exchange of (Ia) with either BuLi or tBuLi in THF followed by quenching of the lithiated derivatives with MeOH, D2O, Me2S2, B(OMe)3, DMF, or CO2 as electrop
The crystal structure of 25,27-dihydroxy-26,28-bis(diethoxyphosphoryloxy)-tert-butylcalix[4]arene (1) (hexane solvate, 1:1) was determined by x-ray crystallography. The crystal data are P2 1 /n, a = 12.652(1) A ห, b = 12.564(2) A ห, c = 18.781(4) A ห, b = 105.56(1)ยฐ, V = 2876.0(8) A ห3, Z = 2. In th