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CAS No. : | 33105-81-6 | MDL No. : | MFCD00065933 |
Formula : | C6H13NO2 | Boiling Point : | No data available |
Linear Structure Formula : | H3NCH(C(CH3)3)COO | InChI Key : | NPDBDJFLKKQMCM-UHFFFAOYSA-N |
M.W : | 131.17 | Pubchem ID : | 306131 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
* 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 |
---|---|---|
With hydrogenchloride; sodium hydroxide; In water; ethyl acetate; | EXAMPLE 2 N-benzoyl-DL-<strong>[33105-81-6]tert-leucine</strong> A suspension of DL-<strong>[33105-81-6]tert-leucine</strong> (327.5 g, 2.5 mol) in water (833 ml) was cooled to 5° C. A solution of sodium hydroxide (220 g, 5.5 mol) in water (833 ml) was added dropwise over 90 min maintaining the temperature at about 5° C. After a further 30 min stirring benzoyl chloride (386 g, 2.75 mol) was added dropwise over 2.5 h keeping the temperature at about 5° C. The temperature was then allowed to warm slowly to 10° C. over 3 hours until the reaction was complete. Ethyl acetate (2.25 l) was added and the pH adjusted to 1.5 using 6M hydrochloric acid (460 ml) keeping the temperature between 5-10° C. A white solid was precipitated which was dissolved by heating the mixture to 40° C. The two layers were separated and the organic layer concentrated to about 1 l. On cooling a white solid crystallized which was collected by filtration, washing with cold ethyl acetate, and dried (466 g, 79percent). A second crop of crystals was recovered (56.0 g, 10 percent). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; In water; at 0℃;pH 10; | DL-<strong>[33105-81-6]tert-leucine</strong> dissolved in water, adding sodium hydroxide to adjust to pH = 10, control the temperature at 0 C, slowly dropping chloroacetyl chloride, while sodium hydroxide control pH, until the reaction solution ninhydrin detection Color. Hydrochloric acid was added to adjust the pH to 1, chloroacetylated D, L-<strong>[33105-81-6]tert-leucine</strong> product as crystals precipitated, and collected by filtration. |
[ 20859-02-3 ]
(S)-2-Amino-3,3-dimethylbutanoic acid
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