反应详情

The product of step B (1.87 g, 5.03 mmol) was diluted with methylene chloride (2 mL) followed by the addition of pyridine (0.489 mL, 6.04 mmol) and methanesulfonyl chloride (0.779 mL, 10.1 mmol). After stirring for 12 hours, the reaction mixture was diluted with methylene chloride and 2N HCl, the layers were separated and the organic layer was dried over MgSO4, filtered and concentrated. The material was purified using a biotage 40M cartridge eluting with hexanes:ethyl acetate (1:1) to yield methyl 4-(4-(2-tert-butoxy-2-oxoethyl)-2-(methylsulfonamidomethyl)phenoxy)benzoate (1.53 g, 67.6% yield) as a clear oil.

1. customthe layers were separated
2. dry with materialthe organic layer was dried over MgSO4
3. filtrationfiltered
4. concentrationconcentrated
5. customThe material was purified
6. washeluting with hexanes:ethyl acetate (1:1)