2,3-Dimethylaniline → HCID 22396859, compound

HRID 1356304Notes

Reaction equation

HRID 1356304 reaction equation
[CH3:1][C:2]1[C:8]([CH3:9])=[CH:7][CH:6]=[CH:5][C:3]=1[NH2:4].CC(C)N=C=NC(C)C.[C:19]([O:23][C:24]([N:26]1[CH2:39][CH2:38][C:37]2[C:36]3[CH:35]=[C:34]([Cl:40])[C:33]([Cl:41])=[CH:32][C:31]=3[N:30]([CH2:42][C:43](O)=[O:44])[C:29]=2[CH2:28][CH2:27]1)=[O:25])([CH3:22])([CH3:21])[CH3:20]>CN(C1C=CN=CC=1)C.C1COCC1.CCOC(C)=O>[Cl:41][C:33]1[C:34]([Cl:40])=[CH:35][C:36]2[C:37]3[CH2:38][CH2:39][N:26]([C:24]([O:23][C:19]([CH3:21])([CH3:20])[CH3:22])=[O:25])[CH2:27][CH2:28][C:29]=3[N:30]([CH2:42][C:43]([NH:4][C:3]3[CH:5]=[CH:6][CH:7]=[C:8]([CH3:9])[C:2]=3[CH3:1])=[O:44])[C:31]=2[CH:32]=1

Participants

7

Reactant 3

HCID 68932,3-DimethylanilineHCID 12734DiisopropylcarbodiimideHCID 22396895HCID 22396895, compound

Product 1

HCID 22396859HCID 22396859, compoundYield 52.4%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

DMAP (60 mg, 0.49 mmol), 2,3-dimethylaniline (0.065 mL, 0.53 mmol) and DIC (0.084 mL, 0.54 mmol) were added to the solution of crude [3-(tert-butoxycarbonyl)-8,9-dichloro-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl]acetic acid (0.20 g, 0.48 mmol) in dry THF (2.5 mL). After 18 h, the reaction was diluted with EtOAc followed by washing with 10% aqueous citric acid, saturated aqueous NaHCO3, and brine. The organic layer was then dried over Na2SO4, decanted, and concentrated. The crude product was first purified by column chromatography (Biotage, 40S, SIM) with CH2Cl2/EtOAc (98:2) to give 0.13 g of impure product. Then, crystallization from EtOAc/heptane gave 96 mg (38%) of a white solid: mp 186-187.5° C.; IR (diffuse reflectance) 3290, 2977, 2939, 1692, 1681, 1662, 1538, 1471, 1450, 1412, 1366, 1338, 1282, 1235, 1163 cm−1; MS (El) m/z 515 (M+), 375, 373, 226, 225, 223, 120, 84, 76, 56, 51; Anal. Calcd for C27H31Cl2N3O3: C, 62.79; H, 6.05; N, 8.14; found: C, 62.60; H, 6.04; N, 8.07.

Workup

  1. washby washing with 10% aqueous citric acid, saturated aqueous NaHCO3, and brine
  2. dry with materialThe organic layer was then dried over Na2SO4
  3. customdecanted
  4. concentrationconcentrated
  5. customThe crude product was first purified by column chromatography (Biotage, 40S, SIM) with CH2Cl2/EtOAc (98:2)

Sources & evidence

ORD record
ord-382e49736a494a5b800500d03e9b4054
Source dataset
uspto-grants-2003_07
Patent number
US06586421B2

Reaction notes

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