Water → 4-[2-Hydroxy-3-(N,N-dibenzylamino)propoxy]-1,3-dihydro-2H-benzimidazol-2-thione

HRID 1957509Notes

Reaction equation

HRID 1957509 reaction equation
[CH2:1]([N:8]([CH2:16][CH:17]([OH:28])[CH2:18][O:19][C:20]1[CH:25]=[CH:24][CH:23]=[C:22]([NH2:26])[C:21]=1[NH2:27])[CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CN(C1C=CC=CN=1)C.[C:38](Cl)(Cl)=[S:39].O>C(Cl)Cl.N1C=CC=CC=1>[OH:28][CH:17]([CH2:16][N:8]([CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)[CH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1)[CH2:18][O:19][C:20]1[C:21]2[NH:27][C:38](=[S:39])[NH:26][C:22]=2[CH:23]=[CH:24][CH:25]=1

Participants

7

Reactant 4

HCID 962WaterHCID 10040Thiophosgene2×HCID 218852-DimethylaminopyridineHCID 21183046HCID 21183046, compound

Product 1

HCID 186987024-[2-Hydroxy-3-(N,N-dibenzylamino)propoxy]-1,3-dihydro-2H-benzimidazol-2-thioneYield 100%

Reagents, catalysts & solvents 2

HCID 1049PyridineSolventHCID 6344DichloromethaneSolvent

Procedure

[3-(N,N-Dibenzylamino)-2hydroxypropoxy]-2,3-diamino benzene (400 mg, 1.1 mmol) was dissolved in a mixture of methylene chloride (70 mL) and pyridine (35mL) and cooled to DOC. Dimethylamino pyridine (DMAP; 311mg, 2.5mmol) was added and thiophosgene (179mg, 0.119mL, 1.6mmol) was introduced in a dropwise fashion. After 30 minutes, another equivalent of thiophosgene was added and the mixture was stirred for 5 hours. Water was carefully added and the resulting biphasic mixture extracted with methylene chloride. The organic solution was dried over MgSO4 and, filtered and evaporated to leave a brown oil (445mg, ca. 100%). MS, NMR.

Workup

  1. temperaturecooled
  2. extractionthe resulting biphasic mixture extracted with methylene chloride
  3. dry with materialThe organic solution was dried over MgSO4
  4. filtrationfiltered
  5. customevaporated

Sources & evidence

ORD record
ord-204b60412f29414d9e558555094f2acf
Source dataset
uspto-grants-1998_07
Patent number
US05786356

Reaction notes

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