Tetrahydrofuran → N-{2-[5-(hydroxymethyl)-1,3,4-thiadiazol-2-yl]-1H-indol-7-yl}-N-methylthiophene-2-sulfonamide

HRID 1994685Notes

Reaction equation

HRID 1994685 reaction equation
[CH3:1][N:2]([S:22]([C:25]1[S:26][CH:27]=[CH:28][CH:29]=1)(=[O:24])=[O:23])[C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:11]=1[NH:10][C:9]([C:12]1[S:16][C:15]([C:17](OCC)=[O:18])=[N:14][N:13]=1)=[CH:8]2.O1CCCC1.[BH4-].[Na+]>CO>[OH:18][CH2:17][C:15]1[S:16][C:12]([C:9]2[NH:10][C:11]3[C:7]([CH:8]=2)=[CH:6][CH:5]=[CH:4][C:3]=3[N:2]([CH3:1])[S:22]([C:25]2[S:26][CH:27]=[CH:28][CH:29]=2)(=[O:24])=[O:23])=[N:13][N:14]=1

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 4311764Sodium borohydrideHCID 136037568Ethyl 5-(7-[methyl(2-thienylsulfonyl)amino]-1h-indol-2-yl)-1,3,4-thiadiazole-2-carboxylate

Product 1

HCID 136037567N-{2-[5-(hydroxymethyl)-1,3,4-thiadiazol-2-yl]-1H-indol-7-yl}-N-methylthiophene-2-sulfonamideYield 94.3%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a mixture of ethyl 5-{7-[methyl(2-thienylsulfonyl)amino]-1H-indol-2-yl}-1,3,4-thiadiazole-2-carboxylate (1.38 g), tetrahydrofuran (20 ml) and methanol (4 ml) was added sodium borohydride (0.26 g), and the mixture was stirred at room temperature for 30 min. The reaction mixture was concentrated, and water was added to the residue. The resulting crystals were collected by filtration, washed with water, and dried to give the title compound (1.18 g, yield 94%) as colorless crystals. melting point 259-260° C. (decomposition).

Workup

  1. concentrationThe reaction mixture was concentrated
  2. additionwater was added to the residue
  3. filtrationThe resulting crystals were collected by filtration
  4. washwashed with water
  5. customdried

Sources & evidence

ORD record
ord-f997fb41aa664563b267c03761a6a6d9
Source dataset
uspto-grants-2010_01
Patent number
US07652133B2

Reaction notes

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