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ChemicalBook CAS DataBase List (R)-Methyl 4-aMino-2-((tert-butoxycarbonyl)aMino)-4-oxobutanoate
124842-28-0

(R)-Methyl 4-aMino-2-((tert-butoxycarbonyl)aMino)-4-oxobutanoate synthesis

2synthesis methods
-

Yield:-

Reaction Conditions:

with methanol in tetrahydrofuran;hexane at 0; for 1 h;

Steps:

12

[0234] To a stirred solution of (S)-4-amino-2-((tert-butoxycarbonyl)amino)-4- oxobutanoic acid (2.0 g, 8.6 mmol) in THF (10 mL) and MeOH (10 mL) at 0 oC was added (trimethylsilyl)diazomethane solution (2 M in hexane, 6.5 mL) dropwise. The mixture was stirred at 0 oC for 1 hour then concentrated to give (S)-methyl 4-amino-2-((tert- butoxycarbonyl)amino)-4-oxobutanoate (crude) as a colorless oil.

References:

WO2019/40274,2019,A1 Location in patent:Paragraph 0234