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CAS No. : | 4353-32-6 | MDL No. : | MFCD00077167 |
Formula : | C13H20N4O4S | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | SLTWQHUEZWYAOI-NSHDSACASA-N |
M.W : | 328.39 | Pubchem ID : | 7408233 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
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* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
15% | With tert.-butylnitrite; In 1,4-dioxane; water; at 20.0℃; for 1.0h;Inert atmosphere; | General procedure: The Boc-protected amino acid (1 mmol) was treated with TFA (3 mL) for 15 minutes. Afterevaporation the residue was dissolved in dioxane-water (1:1, 4 mL) and the flask wasplaced in an ice bath. tert-Butylnitrite (0.13 mL, 1.1 mmol) was added and stirring wasmaintained under nitrogen at room temperature for one hour. After pouring the reactionmixture onto celite and evaporation (50 Pa, 30 C) into a dry free-floating powder,separation was performed utilizing a CombiFlash Rf (Teledyne ISCO) automated flashchromatography apparatus by means of AcOH-MeOH-EtOAc (1:9:90) on a normal phasesilica column affording the pure a-hydroxy carboxylic acid in the yield specified in Table 1.HO-His(Bom)-OH and HO-<strong>[4353-32-6]Arg(Tos)</strong>-OH were isolated by adding water (30 mL) to thereaction mixture followed by freeze drying and HPLC purification. |