1-Methyl-2-nitro-1-nitrosoguanidine → N-[2-[4-[[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]amino]-1-piperidinyl]ethyl]-N'-nitroguanidine

HRID 280343Notes

Reaction equation

HRID 280343 reaction equation
[CH3:1][N:2](N=O)/[C:3](/[NH2:8])=[N:4]/[N+:5]([O-:7])=[O:6].NC[CH2:13][N:14]1[CH2:19][CH2:18][CH:17]([NH:20][C:21]2[N:25]([CH2:26][C:27]3[CH:32]=[CH:31][C:30]([F:33])=[CH:29][CH:28]=3)[C:24]3[CH:34]=[CH:35][CH:36]=[CH:37][C:23]=3[N:22]=2)[CH2:16][CH2:15]1>C(O)C>[F:33][C:30]1[CH:31]=[CH:32][C:27]([CH2:26][N:25]2[C:24]3[CH:34]=[CH:35][CH:36]=[CH:37][C:23]=3[N:22]=[C:21]2[NH:20][CH:17]2[CH2:16][CH2:15][N:14]([CH2:13][CH2:1][NH:2][C:3]([NH:4][N+:5]([O-:7])=[O:6])=[NH:8])[CH2:19][CH2:18]2)=[CH:28][CH:29]=1

Participants

4

Reactant 2

HCID 95620601-Methyl-2-nitro-1-nitrosoguanidineHCID 12891741N-[1-(2-aminoethyl)-4-piperidinyl]-1-(4-fluorophenylmethyl)-1H-benzimidazol-2-amine

Product 1

HCID 178512207N-[2-[4-[[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]amino]-1-piperidinyl]ethyl]-N'-nitroguanidineYield 33%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of 1.5 parts of N-methyl-N'-nitro-N-nitrosoquanidine, 3.7 parts of N-[1-(2-aminoethyl)-4-piperidinyl]-1-(4-fluorophenylmethyl)-1H-benzimidazol-2-amine and 80 parts of ethanol 50% was stirred overnight at room temperature. The reaction mixture was evaporated. The residue was purified by column chromatography over silica gel using a mixture of trichloromethane and methanol, saturated with ammonia, (96:4 by volume) as eluent. The pure fractions were collected and the eluent was evaporated. The residue was crystallized from 2-propanol. The product was filtered off and dried overnight at 110° C., yielding 1.5 parts (33%) of N-[2-[4-[[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]amino]-1-piperidinyl]ethyl]-N'-nitroguanidine; mp. 146.7° C. (compound 23).

Workup

  1. customThe reaction mixture was evaporated
  2. customThe residue was purified by column chromatography over silica gel using
  3. additiona mixture of trichloromethane and methanol
  4. customThe pure fractions were collected
  5. customthe eluent was evaporated
  6. customThe residue was crystallized from 2-propanol
  7. filtrationThe product was filtered off
  8. customdried overnight at 110° C.

Sources & evidence

ORD record
ord-47ecba52425048cd89518303a7e74ba9
Source dataset
uspto-grants-1986_05
Patent number
US04588722

Reaction notes

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