Water → N-((1-(3,5-Dimethoxybenzyl)-1H-1,2,3-triazol-4-yl)methyl)-2-(4-methoxyphenylamino) nicotinamide

HRID 626389Notes

Reaction equation

HRID 626389 reaction equation
CO[C:3]1[CH:8]=[C:7]([O:9][CH3:10])[CH:6]=[CH:5][C:4]=1[NH:11][C:12]1[N:23]=[CH:22][CH:21]=[CH:20][C:13]=1[C:14]([NH:16][CH2:17][C:18]#[CH:19])=[O:15].[N:24]([CH2:27][C:28]1[CH:33]=[C:32]([O:34][CH3:35])[CH:31]=[C:30]([O:36][CH3:37])[CH:29]=1)=[N+:25]=[N-:26].O.O=C1O[C@H]([C@H](CO)O)C([O-])=C1O.[Na+]>S([O-])([O-])(=O)=O.[Cu+2].C(O)(C)(C)C>[CH3:35][O:34][C:32]1[CH:33]=[C:28]([CH:29]=[C:30]([O:36][CH3:37])[CH:31]=1)[CH2:27][N:24]1[CH:19]=[C:18]([CH2:17][NH:16][C:14](=[O:15])[C:13]2[CH:20]=[CH:21][CH:22]=[N:23][C:12]=2[NH:11][C:4]2[CH:3]=[CH:8][C:7]([O:9][CH3:10])=[CH:6][CH:5]=2)[N:26]=[N:25]1

Participants

7

Reactant 4

HCID 962WaterHCID 115212321-(Azidomethyl)-3,5-dimethoxybenzeneHCID 23667548Sodium AscorbateHCID 1181260462-(2,4-dimethoxyphenylamino)-N-(prop-2-ynyl)nicotinamide

Product 1

HCID 90681012N-((1-(3,5-Dimethoxybenzyl)-1H-1,2,3-triazol-4-yl)methyl)-2-(4-methoxyphenylamino) nicotinamideYield 76.8%

Reagents, catalysts & solvents 2

HCID 24462Copper SulfateCatalystHCID 6386tert-ButanolSolvent

Procedure

Compound 8 (194 mg, 1 mmol) and 2,4-dimethoxyaniline (9e, 153 mg, 1 mmol) were taken in ethylene glycol and heated at 140° C. for 6 h. Then the reaction mixture was cooled and extracted with ethyl acetate from the aqueous layer and concentrated in vacuum. The compound was further purified by column chromatography using 60-120 silica gel to obtain 2-(2,4-dimethoxyphenylamino)-N-(prop-2-ynyl)nicotinamide 10g as pure product. To a solution of 2-(2,4-dimethoxyphenylamino)-N-(prop-2-ynyl)nicotinamide (10 g, 150 mg, 0.48 mmol) and 1-(azidomethyl)-3,5-dimethoxybenzene (12d, 102 mg, 0.53 mmol) in 2:1 mixture of water and tert-butyl alcohol, sodium ascorbate (0.06 mmol) and copper (II) sulphate (0.005 mmol) were added sequentially. The reaction was stirred at room temperature for 12 h, TLC analysis indicated completion of reaction. The reaction mixture was concentrated under vacuum and extracted with EtOAc to give crude product. The crude was purified by column chromatography to afford pure product 6e (175 mg, 72%); mp: 147-149° C.; 1H NMR (500 MHz, CDCl3) δ 10.36 (s, 1H), 8.25 (dd, J=5.0, 3.0 Hz, 1H), 7.73 (dd, J=7.0 Hz, 1H), 7.53 (s, 1H), 7.15 (brs, 1H), 6.58-6.54 (m, 1H), 6.47-6.43 (m, 2H), 6.36 (s, 3H), 5.41 (s, 2H), 4.66 (d, J=5.2 Hz, 2H), 3.91 (s, 3H), 3.80 (s, 3H), 3.74 ppm (s, 6H) MS (ESI m/z): 505 [M+H]+. Yield: 72%

Workup

  1. additionwere added sequentially
  2. customcompletion of reaction
  3. concentrationThe reaction mixture was concentrated under vacuum
  4. extractionextracted with EtOAc
  5. customto give crude product
  6. customThe crude was purified by column chromatography

Sources & evidence

ORD record
ord-9d3dc78b141c4f8e9ebc194bd1419f41
Source dataset
uspto-grants-2016_04
Patent number
US09309225B2

Reaction notes

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