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Sodium borohydride → 1,1-Dimethylethyl (2S)-4-{[3-fluoro-4-(methylamino)phenyl]methyl}-2-methyl-1-piperazinecarboxylate

HRID 534746
Notes
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Reaction equation

HRID 534746 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][N:9]2[CH2:14][CH2:13][N:12]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[C@@H:11]([CH3:22])[CH2:10]2)=[CH:4][C:3]=1[F:23].[CH3:24][C@H]1CN(CC2C=CC(NC)=CC=2)CCN1C(OC(C)(C)C)=O.[BH4-].[Na+]>>[F:23][C:3]1[CH:4]=[C:5]([CH2:8][N:9]2[CH2:14][CH2:13][N:12]([C:15]([O:17][C:18]([CH3:19])([CH3:21])[CH3:20])=[O:16])[C@@H:11]([CH3:22])[CH2:10]2)[CH:6]=[CH:7][C:2]=1[NH:1][CH3:24]
ParticipantsConditionsProcedureSources & evidenceReaction notes

Participants

4

Reactant 3

HCID 4311764Sodium borohydrideHCID 592621311,1-Dimethylethyl (2S)-2-methyl-4-{[4-(methylamino)phenyl]methyl}-1-piperazinecarboxylateHCID 592622441,1-Dimethylethyl (2S)-4-[(4-amino-3-fluorophenyl)methyl]-2-methyl-1-piperazinecarboxylate

Product 1

HCID 592621251,1-Dimethylethyl (2S)-4-{[3-fluoro-4-(methylamino)phenyl]methyl}-2-methyl-1-piperazinecarboxylate

Conditions

Temperature
50 °C

Procedure

The title compound was prepared from 1,1-dimethylethyl (2S)-4-[(4-amino-3-fluorophenyl)methyl]-2-methyl-1-piperazinecarboxylate (D63) using a method similar to that described for D3 in Description 3A although the reaction was heated at 50° C. overnight prior to and after addition of sodium borohydride. δH (CDCl3, 400 MHz) 6.96 (2H, m), 6.61 (1H, m), 4.17 (1H, br.s), 3.89 (1H, br.s), 3.79 (1H, d), 3.41 (1H, d), 3.28 (1H, d), 3.08 (1H, td), 2.87 (3H, s), 2.74 (1H, m), 2.57 (1H, m), 2.08 (1H, dd), 1.95 (1H, m), 1.45 (9H, s), 1.22 (3H, d).

Sources & evidence

ORD record
ord-3f16c7c3e1ac46eab58242206f94ce5e
Source dataset
uspto-grants-2014_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08853218B2

Reaction notes

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On this pageParticipantsConditionsProcedureSources & evidenceReaction notes