Diisopropylethylamine → N(4)-[(1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)-silyl]oxy}methyl)cyclopentyl]-5-chloro-3-nitropyridine-2,4-diamine

HRID 447668Notes

Reaction equation

HRID 447668 reaction equation
Cl[C:2]1[C:7]([Cl:8])=[CH:6][N:5]=[C:4]([NH2:9])[C:3]=1[N+:10]([O-:12])=[O:11].[Si:13]([O:20][C@@H:21]1[C@H:25]([CH2:26][O:27][Si:28]([C:31]([CH3:34])([CH3:33])[CH3:32])([CH3:30])[CH3:29])[CH2:24][C@@H:23]([NH2:35])[CH2:22]1)([C:16]([CH3:19])([CH3:18])[CH3:17])([CH3:15])[CH3:14].CCN(C(C)C)C(C)C>C(O)C>[Si:13]([O:20][C@@H:21]1[C@H:25]([CH2:26][O:27][Si:28]([C:31]([CH3:34])([CH3:33])[CH3:32])([CH3:29])[CH3:30])[CH2:24][C@@H:23]([NH:35][C:2]2[C:7]([Cl:8])=[CH:6][N:5]=[C:4]([NH2:9])[C:3]=2[N+:10]([O-:12])=[O:11])[CH2:22]1)([C:16]([CH3:19])([CH3:18])[CH3:17])([CH3:15])[CH3:14]

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 468676602-Amino-4,5-dichloro-3-nitropyridineHCID 59671204(1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]oxy}methyl)cyclopentanamine

Product 1

HCID 66797989N(4)-[(1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)-silyl]oxy}methyl)cyclopentyl]-5-chloro-3-nitropyridine-2,4-diamineYield 82.6%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A solution of 4,5-dichloro-3-nitropyridin-2-amine (0.0365 g, 0.000175 mol) (Johansson, H; Lawitz, K; Nikitidis, G; Sjoe, P; Storm, P. PCT Int. Application WO2004/016611), (1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]-oxy}methyl)cyclopentanamine (0.0947 g, 0.000263 mol) and DIPEA (0.0907 g, 0.000702 mol) in ethanol (10.0 mL) was refluxed overnight. The reaction was concentrated and purified by flash chromatography (30% EtOAc/hexanes) to afford the title compound (0.0768 g, 82%) as a yellow solid.

Workup

  1. concentrationThe reaction was concentrated
  2. custompurified by flash chromatography (30% EtOAc/hexanes)

Sources & evidence

ORD record
ord-9a00f0be85c3406f9e771934e9a9789a
Source dataset
uspto-grants-2013_07
Patent number
US08481550B2

Reaction notes

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