(2S)-2-{[(tert-Butoxycarbonyl)amino]methyl}-3-methylbutanoic acid synthesis
- Product Name:(2S)-2-{[(tert-Butoxycarbonyl)amino]methyl}-3-methylbutanoic acid
- CAS Number:210346-16-0
- Molecular formula:C11H21NO4
- Molecular Weight:231.29
24424-99-5
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203854-54-0
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210346-16-0
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Yield:210346-16-0 100%
Reaction Conditions:
with triethylamine in methanol at 23; for 24 h;
Steps:
1.1 Step 1 : Synthesis of (S)-2-(((tert-butoxycarbonyl)amino)methyl)-3-methylbutanoic acid
ayninesis ο (o)-2-(((tert-butoxycarbonyl)ammo)methyl)-3-methylbutanoic acia A mixture containing di-tert-butyl dicarbonate (2 equiv.), triethylamine (1 equiv.) and (S)-2-(aminomethyl)-3-methylbutanoic acid (1 equiv.) in methanol was stirred at 23 °C for 24 h. The mixture was concentrated under vacuum. The resulting residue was diluted in ethyl acetate and washed with IN HCl solution. The organic layer was dried, filtered and evaporated to deliver the desired intermediate, (S)-2-(((tert-butoxycarbonyl)- -amino)methyl)-3-methylbutanoic acid (730 mg, 100% yield) as a white solid. NMR (500 MHz, CDCl3) 5 ppm 3.39 - 3.55 (m, 1 H) 3.06 - 3.31 (m, 1 H) 2.40 - 2.58 (m, 1 H) 1.86 - 2.10 (m, 1 H) 1.38 - 1.52 (m, 9 H) 0.94 - 1.05 (m, 6 H). Step 2:
References:
WO2016/44447,2016,A1 Location in patent:Paragraph 00224
941292-85-9
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210346-16-0
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903889-49-6
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24424-99-5
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$13.50/25G
210346-16-0
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$165.00/250mg
27675-38-3
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210346-16-0
39 suppliers
$165.00/250mg