1-Hydroxybenzotriazole → N-methoxy-N,2-dimethyl-3-[methyl(2-thienylsulfonyl)amino]-4H-thieno[3,2-b]pyrrole-5-carboxamide

HRID 453594Notes

Reaction equation

HRID 453594 reaction equation
[CH3:1][C:2]1[S:9][C:8]2[CH:7]=[C:6]([C:10]([OH:12])=O)[NH:5][C:4]=2[C:3]=1[N:13]([CH3:22])[S:14]([C:17]1[S:18][CH:19]=[CH:20][CH:21]=1)(=[O:16])=[O:15].Cl.[CH3:24]OCN.[N:28]1([OH:37])[C:32]2C=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC>O.CN(C)C=O.C(N(CC)CC)C>[CH3:24][O:37][N:28]([CH3:32])[C:10]([C:6]1[NH:5][C:4]2[C:3]([N:13]([CH3:22])[S:14]([C:17]3[S:18][CH:19]=[CH:20][CH:21]=3)(=[O:16])=[O:15])=[C:2]([CH3:1])[S:9][C:8]=2[CH:7]=1)=[O:12]

Participants

8

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 21959107Methoxymethanamine hydrochlorideHCID 594113852-methyl-3-[methyl(2-thienylsulfonyl)amino]-4H-thieno[3,2-b]pyrrole-5-carboxylic acid

Product 1

HCID 59411392N-methoxy-N,2-dimethyl-3-[methyl(2-thienylsulfonyl)amino]-4H-thieno[3,2-b]pyrrole-5-carboxamideYield 80%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

To a mixture of 2-methyl-3-[methyl(2-thienylsulfonyl)amino]-4H-thieno[3,2-b]pyrrole-5-carboxylic acid (0.30 g), N-methoxymethylamine hydrochloride (100 mg), 1H-1,2,3-benzotriazol-1-ol (150 mg), triethylamine (0.15 mL) and N,N-dimethylformamide (10 mL) was added N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride (190 mg), and the mixture was stirred at room temperature overnight. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried (MgSO4) and concentrated. Crystallization from diethyl ether gave N-methoxy-N,2-dimethyl-3-[methyl(2-thienylsulfonyl)amino]-4H-thieno[3,2-b]pyrrole-5-carboxamide (262 mg, yield 80%) as colorless crystals. melting point 187° C.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated brine
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated
  5. customCrystallization from diethyl ether

Sources & evidence

ORD record
ord-d3963643c9484f4a9eaf6a5f1da4710b
Source dataset
uspto-grants-2013_07
Patent number
US08492405B2

Reaction notes

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