反应详情

A suspension of 2.34 g (17.50 mmol) of aluminum trichloride in 20 mL of 1,1,2,2-tetrachloroethane was treated with 2.02 mL (2.78 g, 15.9 mmol) of 2-chlorobenzoyl chloride and the resulting solution was stirred for 20 minutes at room temperature. Then 2.00 g (7.23 mmol) of the product of Step A was added and the reaction mixture was refluxed for 16 hours. The cooled reaction mixture was poured over ice and the insolubles were filtered off and washed with ethyl acetate. The organic layer was separated and the aqueous was washed twice with ethyl acetate. The combined organic layers were dried over magnesium sulfate and evaporated. The residues were chromatographed on silica gel, eluting with 4:1 hexane ethyl acetate to give 2.05 g (51%) of the title product, an amorphous foam. Anal. Calcd. for C24H14O2N3Cl5 : C, 52.06: H, 2.55; N, 7.59. Found: C, 52.11; H, 2.57; N, 7.27.

1. temperaturethe reaction mixture was refluxed for 16 hours
2. customThe cooled reaction mixture
3. additionwas poured over ice
4. filtrationthe insolubles were filtered off
5. washwashed with ethyl acetate
6. customThe organic layer was separated
7. washthe aqueous was washed twice with ethyl acetate
8. dry with materialThe combined organic layers were dried over magnesium sulfate
9. customevaporated
10. customThe residues were chromatographed on silica gel
11. washeluting with 4:1 hexane ethyl acetate