Dimethylformamide → HCID 13983254, compound

HRID 893678Notes

Reaction equation

HRID 893678 reaction equation
[NH:1]1[C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=2[C:4](=[O:11])OC1=O.CN(C)C=O.[NH2:18][CH2:19][CH2:20][N:21]1[CH2:26][CH2:25][CH:24]([NH:27][C:28]2[N:32]([CH2:33][C:34]3[CH:39]=[CH:38][C:37]([F:40])=[CH:36][CH:35]=3)[C:31]3[CH:41]=[CH:42][CH:43]=[CH:44][C:30]=3[N:29]=2)[CH2:23][CH2:22]1>O>[NH2:1][C:6]1[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=1[C:4]([NH:18][CH2:19][CH2:20][N:21]1[CH2:26][CH2:25][CH:24]([NH:27][C:28]2[N:32]([CH2:33][C:34]3[CH:39]=[CH:38][C:37]([F:40])=[CH:36][CH:35]=3)[C:31]3[CH:41]=[CH:42][CH:43]=[CH:44][C:30]=3[N:29]=2)[CH2:23][CH2:22]1)=[O:11]

Participants

5

Reactant 3

HCID 6228Dimethylformamide2×HCID 8359Isatoic AnhydrideHCID 12891741N-[1-(2-aminoethyl)-4-piperidinyl]-1-(4-fluorophenylmethyl)-1H-benzimidazol-2-amine

Product 1

HCID 13983254HCID 13983254, compoundYield 80%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a stirred and hot (50° C.) mixture of 4.1 parts of 2H-3,1-benzoxazine-2,4(1H)-dione and 31.5 parts of N,N-dimethylformamide was added dropwise a solution of 9.4 parts of N-[1-(2-aminoethyl)-4-piperidinyl]-1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-amine in 31.5 parts of N,N-dimethylformamide at 50° C. Upon completion, stirring was continued for 3 hours at 50° C. Water was added and the product was extracted with 4-methyl-2-pentanone. The extract was dried, filtered and evaporated. The residue was crystallized from acetonitrile, yielding 9.8 parts (80%) of 2-amino-N-[2-[4-[[1-[(4-fluorophenyl)-methyl]-1H-benzimidazol-2-yl]amino]-1piperidinyl]ethyl]benzamide; mp. 171.7° C. (intermediate 157).

Workup

  1. stirringUpon completion, stirring
  2. extractionthe product was extracted with 4-methyl-2-pentanone
  3. customThe extract was dried
  4. filtrationfiltered
  5. customevaporated
  6. customThe residue was crystallized from acetonitrile

Sources & evidence

ORD record
ord-5e5cb8d766654e0f87befaecd318da65
Source dataset
uspto-grants-1992_06
Patent number
US05126339

Reaction notes

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