反应详情

To a stirred mixture of 1.25 parts of magnesium, 14 parts of 1,1'-oxybisethane and 8 parts of bromobenzene was added a solution of 8 parts of intermediate 1, namely 7-quinolinecarboxaldehyde, in 72 parts of tetrahydrofuran, keeping the temperature between 0° C. and 5° C. After stirring for 12 hours at room temperature, the reaction mixture was poured into 300 parts of ice-water. The product was extracted with 1,1'-oxybisethane (3×70 parts). The combined extracts were dried, filtered and evaporated. The residue was purified by column chromatography (silica gel; CH2Cl2 /CH3OH 98:2). The eluent of the desired fraction was evaporated, yielding 3.2 parts (26.6%) of α-phenyl-7-quinolinemethanol; mp. 118° C. (interm. 2). In a similar manner there were also prepared the intermediates listed in Table 1.

1. customthe temperature between 0° C. and 5° C
2. extractionThe product was extracted with 1,1'-oxybisethane (3×70 parts)
3. customThe combined extracts were dried
4. filtrationfiltered
5. customevaporated
6. customThe residue was purified by column chromatography (silica gel; CH2Cl2 /CH3OH 98:2)
7. customThe eluent of the desired fraction was evaporated