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

HRID 1960255Notes

Reaction equation

HRID 1960255 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-47bf81a4c6134f92969bfa3431ef078f
Source dataset
uspto-grants-2013_04
Patent number
US08410087B2

Reaction notes

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