2-Nitrophenyl isothiocyanate → N-[2-{4-[1-(4-fluorophenylmethyl)-1H-benzimidazol-2-ylamino]-1-piperidinyl}ethyl]-N'-(2-nitrophenyl)thiourea

HRID 1856577Notes

Reaction equation

HRID 1856577 reaction equation
[N:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[N+:10]([O-:12])=[O:11])=[C:2]=[S:3].[NH2:13][CH2:14][CH2:15][N:16]1[CH2:21][CH2:20][CH:19]([NH:22][C:23]2[N:27]([CH2:28][C:29]3[CH:34]=[CH:33][C:32]([F:35])=[CH:31][CH:30]=3)[C:26]3[CH:36]=[CH:37][CH:38]=[CH:39][C:25]=3[N:24]=2)[CH2:18][CH2:17]1>O1CCCC1>[F:35][C:32]1[CH:33]=[CH:34][C:29]([CH2:28][N:27]2[C:26]3[CH:36]=[CH:37][CH:38]=[CH:39][C:25]=3[N:24]=[C:23]2[NH:22][CH:19]2[CH2:20][CH2:21][N:16]([CH2:15][CH2:14][NH:13][C:2]([NH:1][C:4]3[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=3[N+:10]([O-:12])=[O:11])=[S:3])[CH2:17][CH2:18]2)=[CH:30][CH:31]=1

Participants

4

Reactant 2

HCID 1376902-Nitrophenyl isothiocyanateHCID 12891741N-[1-(2-aminoethyl)-4-piperidinyl]-1-(4-fluorophenylmethyl)-1H-benzimidazol-2-amine

Product 1

HCID 12891743N-[2-{4-[1-(4-fluorophenylmethyl)-1H-benzimidazol-2-ylamino]-1-piperidinyl}ethyl]-N'-(2-nitrophenyl)thioureaYield 67%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A mixture of 1.8 parts of 1-isothiocyanato-2-nitrobenzene, 3.7 parts of N-[1-(2-aminoethyl)-4-piperidinyl]-1-(4-fluorophenylmethyl)-1H-benzimidazol-2-amine and 135 parts of tetrahydrofuran is stirred overnight at room temperature. The reaction mixture is evaporated. The residue is purified by column-chromatography over silica gel using a mixture of trichloromethane and methanol (98:2 by volume) as eluent. The pure fractions are collected and the eluent is evaporated, yielding 3.7 parts (67%) of N-[2-{4-[1-(4-fluorophenylmethyl)-1H-benzimidazol-2-ylamino]-1-piperidinyl}ethyl]-N'-(2-nitrophenyl)thiourea as a residue.

Workup

  1. customThe reaction mixture is evaporated
  2. customThe residue is purified by column-chromatography over silica gel using
  3. additiona mixture of trichloromethane and methanol (98:2 by volume) as eluent
  4. customThe pure fractions are collected
  5. customthe eluent is evaporated

Sources & evidence

ORD record
ord-09cba7d851b441b9aa62da2761255fa6
Source dataset
uspto-grants-1980_08
Patent number
US04219559

Reaction notes

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