1-Hydroxybenzotriazole → tert-butyl N-[(3S)-2-oxo-2,3,4,5-tetrahydro-1H-1,5-benzodiazepin-3-yl]carbamate

HRID 1481892Notes

Reaction equation

HRID 1481892 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[NH:8][CH2:9][C@H:10]([NH:14][C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[C:11](O)=[O:12].CCN=C=NCCCN(C)C.Cl.C1C=CC2N(O)N=NC=2C=1.CCN(C(C)C)C(C)C>CN(C=O)C.C(OCC)(=O)C>[C:18]([O:17][C:15](=[O:16])[NH:14][C@@H:10]1[C:11](=[O:12])[NH:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=2[NH:8][CH2:9]1)([CH3:21])([CH3:20])[CH3:19]

Participants

7

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 22881946(2S)-3-[(2-aminophenyl)amino]-2-{[(tert-butoxy)carbonyl]amino}propanoic acid

Product 1

HCID 22881971tert-butyl N-[(3S)-2-oxo-2,3,4,5-tetrahydro-1H-1,5-benzodiazepin-3-yl]carbamateYield 77.2%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To an ice cold solution of (S)-3-(2-amino-phenylamino)-2-tert-butoxycarbonylamino-propionic acid (4 g, 13.54 mmol) in DMF (40 mL) was added EDCI.HCl (2.86 g, 14.89 mmol), HOBT (2.01 g, 14.89 mmol) and DIPEA (7.19 mL, 40.63 mmol). The resulting mixture was stirred for 16 h at RT. The mixture was diluted with ethyl acetate and washed with water and brine. The organic layer was concentrated and the resulting material was purified by silica gel chromatography using to afford the title compound (2.9 g, 77%) as an off white solid. LC-MS: 278 (M+H).

Workup

  1. washwashed with water and brine
  2. concentrationThe organic layer was concentrated
  3. customthe resulting material was purified by silica gel chromatography

Sources & evidence

ORD record
ord-384fd5ddeac6484a91ff6f5fbb571b23
Source dataset
uspto-grants-2016_08
Patent number
US09409888B2

Reaction notes

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