1,2-Dichloroethane → 8-[4-(1,3-dioxolan-2-yl)phenyl]-3-(1-methyl-1H-imidazol-4-yl)-9-phenyl[1,2,4]triazolo[3,4-f]-1,6-naphthyridine

HRID 1678774Notes

Reaction equation

HRID 1678774 reaction equation
[O:1]1[CH2:5][CH2:4][O:3][CH:2]1[C:6]1[CH:11]=[CH:10][C:9]([C:12]2[C:21]([C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=3)=[CH:20][C:19]3[C:14](=[CH:15][CH:16]=[N:17][C:18]=3[NH:28][NH2:29])[N:13]=2)=[CH:8][CH:7]=1.C1C=CC2N(O)N=NC=2C=1.[CH3:40][N:41]1[CH:45]=[C:44]([C:46](O)=O)[N:43]=[CH:42]1.C(Cl)CCl>CN(C=O)C.O.C(O)(=O)C>[O:3]1[CH2:4][CH2:5][O:1][CH:2]1[C:6]1[CH:11]=[CH:10][C:9]([C:12]2[C:21]([C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=3)=[CH:20][C:19]3[C:18]4=[N:28][N:29]=[C:46]([C:44]5[N:43]=[CH:42][N:41]([CH3:40])[CH:45]=5)[N:17]4[CH:16]=[CH:15][C:14]=3[N:13]=2)=[CH:8][CH:7]=1

Participants

8

Reactant 4

HCID 111,2-DichloroethaneHCID 757711-HydroxybenzotriazoleHCID 5415091-methyl-1H-imidazole-4-carboxylic acidHCID 594729242-[4-(1,3-dioxolan-2-yl)phenyl]-5-hydrazinyl-3-phenyl-1,6-Naphthyridine

Product 1

HCID 594729458-[4-(1,3-dioxolan-2-yl)phenyl]-3-(1-methyl-1H-imidazol-4-yl)-9-phenyl[1,2,4]triazolo[3,4-f]-1,6-naphthyridine

Reagents, catalysts & solvents 3

HCID 176Acetic AcidSolventHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a stirred solution of 3-4 (5 g, 13 mMol), HOBT (1.9 g, 14.3 mMol), and 1-methyl-1H-imidazole-4-carboxylic acid (2 g, 15.6 mMol) in anhydrous DMF (100 mL) was added EDC (2.7 g, 14.3 mMol). The solution was stirred overnight at ambient temperature. The solution was then treated with 24 mL of acetic acid and was heated to 80° C. in an oil bath for 5 hours. Upon cooling to room temperature, an equal volume of water was added and the resulting suspension was filtered and washed with copious amounts of water. The collected solid was dried azeotropically with toluene three times to yield 13-1 as a tan solid. Mass (M+1) calculated: 475.1877 observed: 475.1871

Workup

  1. temperaturewas heated to 80° C. in an oil bath for 5 hours
  2. temperatureUpon cooling to room temperature
  3. filtrationthe resulting suspension was filtered
  4. washwashed with copious amounts of water
  5. dry with materialThe collected solid was dried azeotropically with toluene three times

Sources & evidence

ORD record
ord-436cf5f3f54c421ca59b53e27cb5dba5
Source dataset
uspto-grants-2011_08
Patent number
US08008317B2

Reaction notes

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