Reaction equation
[Br:1][C:2]1[CH:6]=[CH:5][S:4][C:3]=1[C:7]([C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([O:15][CH3:16])[CH:10]=1)=O.Cl.[OH:18][NH2:19]>N1C=CC=CC=1>[Br:1][C:2]1[CH:6]=[CH:5][S:4][C:3]=1[C:7]([C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([O:15][CH3:16])[CH:10]=1)=[N:19][OH:18]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A mixture prepared from 7 g of (3-bromothien-2-yl) (3-methoxyphenyl)methanone, 3.09 g of hydroxyamine hydrochloride and 40 ml of pyridine was stirred at room temperature overnight and thereafter heated at 100°-115° C. for 4 hours. The mixture was then quenched with water, the organics were extracted into ether, and the ether solution was washed with 3N hydrochloric acid and water and dried over anhydrous magnesium sulfate. Evaporation of the ether left a residue which crystallized upon standing overnight. The crude solid was passed through a column (alumina packed in hexane) with 15% ether/hexane used as an eluent. The solid was recrystallized from ether/hexane to give a crystalline product (6.4 g, m.p. 100°-103° C).
Workup
- temperatureheated at 100°-115° C. for 4 hours
- customThe mixture was then quenched with water
- extractionthe organics were extracted into ether
- washthe ether solution was washed with 3N hydrochloric acid and water
- dry with materialdried over anhydrous magnesium sulfate
- customEvaporation of the ether
- waitleft a residue which
- customcrystallized
- waitupon standing overnight
- customThe solid was recrystallized from ether/hexane
Sources & evidence
- ORD record
- ord-c06675f240434e9cb982cfd930b85842
- Source dataset
- uspto-grants-1988_09
- Patent number
- US04769472
Linked notes
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