反应详情

温度

100 °C

2,2,2-trichloroethyl 6-(2-phenylacetamido)-2,2-dimethylpenam-3- carboxylate-1-oxide (0.96 g.) was dissolved in 1,1,2-trichloroethane (15 cc ), and pyridine (0.32 g.) and pyridine hydrochloride (0.12 g.) were added thereto. The mixture was heated at 100° C., for 3 hours, cooled, washed with water, dried and then concentrated. The residue was subjected to a chromatography of silica gel in which chloroform was used as the eluant. The eluate was concentrated to yield, as the residue, crystals (0.09 g.) of 2,2,2-trichloroethyl 6-(2-phenylacetamido)-2- methyl-2-chloromethylpenam-3-carboxylate, m.p. 104° - 105° C.

1. temperaturecooled
2. washwashed with water
3. customdried
4. concentrationconcentrated
5. concentrationThe eluate was concentrated