N-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethyl)-2-chloro-5,6-dimethyl-3-nitropyridin-4-amine → N'-((1S)-2-{[tert-Butyl(dimethyl)silyl]oxy}-1-methylethyl)-2-chloro-5,6-dimethylpyridine-3,4-diamine

HRID 549164Notes

Reaction equation

HRID 549164 reaction equation
[Si:1]([O:8][CH2:9][C@@H:10]([NH:12][C:13]1[C:18]([CH3:19])=[C:17]([CH3:20])[N:16]=[C:15]([Cl:21])[C:14]=1[N+:22]([O-])=O)[CH3:11])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2]>[Pt].C1(C)C=CC=CC=1>[Si:1]([O:8][CH2:9][C@@H:10]([NH:12][C:13]1[C:18]([CH3:19])=[C:17]([CH3:20])[N:16]=[C:15]([Cl:21])[C:14]=1[NH2:22])[CH3:11])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2]

Participants

4

Reactant 1

HCID 86624128N-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethyl)-2-chloro-5,6-dimethyl-3-nitropyridin-4-amine

Product 1

HCID 86624129N'-((1S)-2-{[tert-Butyl(dimethyl)silyl]oxy}-1-methylethyl)-2-chloro-5,6-dimethylpyridine-3,4-diamineYield 99.7%

Reagents, catalysts & solvents 2

HCID 23939PlatinumCatalystHCID 1140TolueneSolvent

Procedure

A pressure bottle was charged with platinum on carbon (5%, 1.16 g) followed by a solution of N-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethyl)-2-chloro-5,6-dimethyl-3-nitropyridin-4-amine (4.79 g, 12.8 mmol) dissolved in 125 mL of toluene. The reaction mixture was shaken under H2 at 48 PSI (3.3×105 Pa). After 6 hours, the reaction mixture was filtered through a pad of CELITE filter agent. The pad was rinsed with toluene and CH2Cl2. The combined filtrates were concentrated under reduced pressure to give N4-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethyl)-2-chloro-5,6-dimethylpyridine-3,4-diamine (4.39 g) as an orange oil.

Workup

  1. filtrationthe reaction mixture was filtered through a pad of CELITE
  2. filtrationfilter agent
  3. washThe pad was rinsed with toluene and CH2Cl2
  4. concentrationThe combined filtrates were concentrated under reduced pressure

Sources & evidence

ORD record
ord-c57cf0a29ca947b3ab44145444a21e74
Source dataset
uspto-grants-2011_05
Patent number
US07943609B2

Reaction notes

Loading…