反应详情

To a stirred and cooled (-78° C.) mixture of 50 parts of 1-bromo-2-(dimethoxymethyl)benzene and 245 parts of 1,1'-oxybisethane were added dropwise 59 parts of a 1-butyllithium solution 2.5M in hexane. Upon complete addition, stirring was continued for 10 minutes at room temperature. A solution of 23.1 parts of 3-pyridinecarboxaldehyde in 42 parts of 1,1'-oxybisethane was added dropwise to the reaction mixture. Upon completion, the mixture was allowed to reach room temperature. The mixture was taken up in ice water and the product was extracted with 1,1'-oxybisethane. The extract was dried, filtered and evaporated, yielding 56 parts (99.9%) of α-[2-(dimethoxymethyl)phenyl]-3-pyridinemethanol as a residue (intermediate 1).

1. temperaturecooled
2. additionUpon complete addition
3. stirringstirring
4. customto reach room temperature
5. extractionthe product was extracted with 1,1'-oxybisethane
6. customThe extract was dried
7. filtrationfiltered
8. customevaporated