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254881-77-1

254881-77-1 Structure

254881-77-1 Structure
IdentificationBack Directory
[Name]

(2R,4S)-1-tert-Butyl 2-methyl 4-aminopyrrolidine-1,2-dicarboxylate
[CAS]

254881-77-1
[Synonyms]

(4S)-4-Amino-1-Boc-D-proline methyl ester
Methyl (2R,4S)-4-AMino-1-Boc-2-pyrrolidinecarboxylate
Methyl (2R,4S)-4-AMino-1-Boc-2-pyrrolidinedicarboxylate
Methyl (2R,4S)-4-aminopyrrolidine-2-carboxylate, N1-BOC protected
1-tert-Butyl 2-methyl (2R,4S)-4-aminopyrrolidine-1,2-dicarboxylate
(2r,4s)-1-tert-butyl 2-methyl 4-aminopyrrolidine-1,2-dicarboxylate
(2R,4S)-4-AMINO-1-BOC-PYRROLIDINE-2-CARBOXYLIC ACID METHYL ESTER-HCl
Methyl (2R,4S)-1-(tert-butoxycarbonyl)-4-aMinopyrrolidine-2-carboxylate
(2R,4S)-4-Amino-1,2-pyrrolidinedicarboxylic acid 1-(tert-butyl) 2-methyl ester
(2R,4S)-4-Amino-1,2-pyrrolidinedicarboxylic acid 1-(1,1-dimethylethyl) 2-methyl ester
1,2-Pyrrolidinedicarboxylic acid, 4-amino-, 1-(1,1-dimethylethyl) 2-methyl ester, (2R,4S)-
Methyl (2R,4S)-4-aminopyrrolidine-2-carboxylate, N1-BOC protected, trans-4-Amino-D-proline methyl ester, N1-BOC protected, (2R,4S)-4-amino-1-(tert-butoxycarbonyl)-2-(methoxycarbonyl)pyrrolidine
[Molecular Formula]

C11H20N2O4
[MDL Number]

MFCD08704545
[MOL File]

254881-77-1.mol
[Molecular Weight]

244.29
Chemical PropertiesBack Directory
[Boiling point ]

321 °C
[density ]

1.151
[Fp ]

148 °C
[storage temp. ]

Keep in dark place,Inert atmosphere,2-8°C
[form ]

solid
[pka]

9.05±0.40(Predicted)
[color ]

Brown
Safety DataBack Directory
[Symbol(GHS) ]

Exclamation Mark (GHS07)
GHS07
[Signal word ]

Warning
[Hazard statements ]

H302-H315-H319-H335
[Precautionary statements ]

P261-P305+P351+P338
[HS Code ]

2922498590
Spectrum DetailBack Directory
[Spectrum Detail]

(2R,4S)-1-tert-Butyl 2-methyl 4-aminopyrrolidine-1,2-dicarboxylate(254881-77-1)1HNMR
Hazard InformationBack Directory
[Synthesis]

1-(1,1-Dimethylethyl) 2-methyl (2R,4S)-4-azido-1,2-pyrrolidinedicarboxylate

185304-04-5

(2R,4S)-1-tert-Butyl 2-methyl 4-aminopyrrolidine-1,2-dicarboxylate

254881-77-1

(2R,4S)-1-tert-butyl 2-methyl-4-azido pyrrolidine-1,2-dicarboxylate (150 mg, 0.390 mmol) was used as a raw material, which was added to methanol (15 mL) together with Pd/C (150 mg, 0.390 mmol). The reaction system was replaced with hydrogen twice, followed by stirring the reaction for 15 h at room temperature. Upon completion of the reaction, the reaction mixture was concentrated to afford methyl (2R,4S)-1-Boc-4-amino-2-pyrrolidinecarboxylate as a gray oil (643 mg, 89% yield). The product was characterized by 1H NMR (600 MHz, CD3OD): δ 4.38-4.41 (m, 1H), 3.74-3.75 (m, 3H), 3.64-3.69 (m, 1H), 3.58-3.61 (m, 1H), 3.16-3.21 (m, 1H), 2.08-2.13 (m, 2H), 1.42- 1.48 (m, 9H); MS-ESI: m/z 145.20 [M+H-100]+.

[References]

[1] Patent: WO2016/34134, 2016, A1. Location in patent: Paragraph 00803
[2] Journal of Medicinal Chemistry, 2000, vol. 43, # 26, p. 4948 - 4963
[3] Tetrahedron, 1996, vol. 52, # 47, p. 15017 - 15030
[4] Journal of Organic Chemistry, 2018, vol. 83, # 8, p. 4491 - 4504
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