反应详情

To a solution of 2-amino-5-aminomethyl-6-(4-methoxy-benzyl)-4,5,6,7-tetrahydro-thieno[2,3-c]pyridine-3-carboxylic acid tert-butyl ester (3.00 g, 7.45 mmol) and diisopropyl ethylamine (1.93 ml, 11.2 mmol) in acetonitrile at room temperature was added a solution of 6-bromomethyl-2-(tert-butyl-dimethyl-silanyloxy)-benzoic acid ethyl ester (2.78 g, 7.45 mmol) in acetonitril over 48 hours. The solution was stirred for 12 hours after the addition was complete. The volatiles were evaporated in vacuo and the residue was taken into ethyl acetate (50 ml) and washed with water, 1 N hydrochloric acid, brine, dried (MgSO4), filtered and the solvent evaporated in vacuo. The residue was chromatographed on silica gel column eluted with a mixture of 20% ethyl acetate/Hexane, which afforded 3.2 g (66. %) of 2-amino-5-(7-(tert-butyl-dimethyl-silanyloxy)-1-oxo-1,3-dihydro-isoindol-2-ylmethyl]-6-(4-methoxy-benzyl)-4,5,6,7-tetrahydro-thieno[2,3-c]pyridine-3-carboxylic acid tert-butyl ester as an oil.

1. additionafter the addition
2. customThe volatiles were evaporated in vacuo
3. washwashed with water, 1 N hydrochloric acid, brine
4. dry with materialdried (MgSO4)
5. filtrationfiltered
6. customthe solvent evaporated in vacuo
7. customThe residue was chromatographed on silica gel column
8. washeluted with a mixture of 20% ethyl acetate/Hexane, which