Ethyl orthoformate → 2-cyano-N-(2,4-dichloro-5-methoxyphenyl)-3-{4-methoxy-3-[3-(4-methylpiperazin-1-yl)-propoxy]-phenylamino}-acrylamide

HRID 1593787Notes

Reaction equation

HRID 1593787 reaction equation
[C:1]([CH2:3][C:4]([NH:6][C:7]1[CH:12]=[C:11]([O:13][CH3:14])[C:10]([Cl:15])=[CH:9][C:8]=1[Cl:16])=[O:5])#[N:2].[CH2:17](OC(OCC)OCC)C.[CH3:27][O:28][C:29]1[CH:34]=[CH:33][C:32]([NH2:35])=[CH:31][C:30]=1[O:36][CH2:37][CH2:38][CH2:39][N:40]1[CH2:45][CH2:44][N:43]([CH3:46])[CH2:42][CH2:41]1>C(O)(C)C>[C:1]([C:3](=[CH:17][NH:35][C:32]1[CH:33]=[CH:34][C:29]([O:28][CH3:27])=[C:30]([O:36][CH2:37][CH2:38][CH2:39][N:40]2[CH2:45][CH2:44][N:43]([CH3:46])[CH2:42][CH2:41]2)[CH:31]=1)[C:4]([NH:6][C:7]1[CH:12]=[C:11]([O:13][CH3:14])[C:10]([Cl:15])=[CH:9][C:8]=1[Cl:16])=[O:5])#[N:2]

Participants

5

Reactant 3

HCID 31214Ethyl orthoformateHCID 160991782-cyano-N-(2,4-dichloro-5-methoxyphenyl)acetamideHCID 589997944-Methoxy-3-[3-(4-methylpiperazin-1-yl)propoxy]aniline

Product 1

HCID 693108472-cyano-N-(2,4-dichloro-5-methoxyphenyl)-3-{4-methoxy-3-[3-(4-methylpiperazin-1-yl)-propoxy]-phenylamino}-acrylamideYield 93%

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent2×

Procedure

To a suspension of 2-cyano-N-(2,4-dichloro-5-methoxyphenyl)acetamide (1.75 g, 6.75 mmol) in 8.2 mL of iso-propanol was added triethylorthoformate (1.5 g, 10.1 mmol). The mixture was heated to reflux. After 20 minutes, 4-methoxy-3-[3-(4-methyl-piperazin-1-yl)-propoxy]-phenylamine in 20 mLs of iso-propanol was added dropwise so as to maintain reflux. After 26 hours, the reaction was cooled to room temperature and the suspended solids were filtered. The solids were rinsed with iso-propanol until effluent was colorless. The yellow solid was dried in vacuo to give 3.45 g (93%) of 2-cyano-N-(2,4-dichloro-5-methoxyphenyl)-3-{4-methoxy-3-[3-(4-methylpiperazin-1-yl)-propoxy]-phenylamino}-acrylamide as a mixture of isomers. 1H NMR (300 MHz, CDCl3) δ 11.35 (br d, 1H), 8.17 (m, 2H), 7.76 (d, 1H), 7.41 (s, 1H), 6.88 (m, 1H) 6.69 (m, 2H), 4.10 (t, J=7 Hz, 2H), 3.96 (s, 3H), 3.87 (s, 3), 2.55 (t, J=7 Hz, 2H), 2.48 (m, 8H), 2.29 (s, 3H), 2.06 (m, 2H); MS (ES) m/z548.1 (M+)

Workup

  1. temperatureThe mixture was heated to reflux
  2. temperatureto maintain
  3. temperaturereflux
  4. waitAfter 26 hours
  5. filtrationthe suspended solids were filtered
  6. washThe solids were rinsed with iso-propanol until effluent
  7. customThe yellow solid was dried in vacuo

Sources & evidence

ORD record
ord-fc9bbdfc89d94943949400054f3b3c39
Source dataset
uspto-grants-2007_11
Patent number
US07297795B2

Reaction notes

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