Dimethylformamide → Benzo[b]thiophene-2-carbonyl Chloride
Reaction equation
[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[CH:3]=[C:2]1[C:10]([OH:12])=O.C(Cl)(=O)C([Cl:16])=O.CN(C=O)C>ClCCl>[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[CH:3]=[C:2]1[C:10]([Cl:16])=[O:12]Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
Benzothiophene-2-carboxylic acid was treated with 1.5 equivalents of oxalyl chloride in dichloromethane in the presence of a catalytic amount of DMF to form benzothiophene-2-carbonyl chloride. Following procedures described for Example 1 and substituting this acyl chloride for 3-trifluoromethylbenzoyl chloride, compound 77 was prepared in 23% yield.
Sources & evidence
- ORD record
- ord-25ce372c22ff4742af685321d5034a00
- Source dataset
- uspto-grants-2006_05
- Patent number
- US07053234B2
Reaction notes
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