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CAS No. : | 49606-99-7 | MDL No. : | MFCD06659116 |
Formula : | C5H9NO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | BUSBCPMSNBMUMT-BYPYZUCNSA-N |
M.W : | 115.13 | Pubchem ID : | 1501944 |
Synonyms : |
|
Chemical Name : | (S)-2-Amino-2-cyclopropylacetic acid |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | Packing Group: | N/A |
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 |
---|---|---|
62% | With thionyl chloride; at 0 - 20℃; for 4.0h;Heating / reflux; | To a 0 C. solution of thionyl chloride (7.6 mL, 104 mmol) in anhydrous methanol (750 mL) was added (S)-cyclopropylglycine (10.0 g, 86.9 mmol, Eastman Chemical Company, Kingsport, Tenn.). The reaction mixture was allowed to warm to room temperature and then refluxed for 4 hrs, then cooled to room temperature and concentrated in vacuo to give a crude solid. The solids were washed with acetone to give 8.94 g of the product as a white solid. Yield: 62%, MS: 130 (M+H+), mp=134.0-135.9 C. |
62% | With thionyl chloride; In methanol; at 0 - 20℃; for 4.0h;Heating / reflux; | To a 0 C. solution of thionyl chloride (7.6 mL, 104 mmol) in anhydrous methanol (750 mL) was added (S)-cyclopropylglycine (10.0 g, 86.9 mmol, Eastman Chemical Company, Kingsport, Tenn.). The reaction mixture was allowed to warm to room temperature and then refluxed for 4 hrs, then cooled to room temperature and concentrated in vacuo to give a crude solid. The solids were washed with acetone to give 8.94 g of (S)-cyclopropylglycine methyl ester HCl as a white solid. Yield: 62%, MS: 130 (M+H+), mp=134.0-135.9 C. |
With acetyl chloride; at 0 - 20℃; | To a suspension of H-Cpg-OH (LS3-A, 20.0 g, 174 mmol, 1.0 eq) in anhydrous MeOH (350 mL) at 0 C. was slowly added freshly distilled (from PCl5) acetyl chloride (185 mL, 2.6 mol, 15 eq) over 45 min. The mixture was allowed to warm to room temperature and stirred 16-18 h. The reaction was monitored by TLC [MeOH/NH4OH/AcOEt (10:2:88); detection: ninhydrin; Rf=0.50]. The mixture was then concentrated under vacuum, azeotroped with toluene (3*) and dried under high vacuum 16-18 h to give LS3-1 as a pale yellow solid (30.0 g, >100% crude yield). 1H NMR (CD3OD): delta 4.88 (3H, s, NH3+), 3.85 (3H, s, CH3O), 3.36-3.33 (1H, d, NH3+CHCH3O), 1.19-1.10 (1H, m, CH(CH2)2), 0.83-0.53 (4H, m, CH(CH2)2). |
[ 102735-53-5 ]
(S)-2-Amino-3-cyclopropylpropanoic acid
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