反应详情

Into a solution containing 50 g (0.14 mol) of N-(3-acetylthio-2-methylpropanoyl)-N-cyclopentylglycine t-butyl ester in 700 ml of methanol was bubbled nitrogen gas for 10 minutes followed by ammonia gas for 30 minutes. After 30 minutes the mixture was concentrated in vacuo and the residue taken up in ethyl acetate. It was washed once with 3% aqueous HCl and once with water, dried over MgSO4, filtered, and concentrated in vacuo to yield an oily product. Purification via HPLC [15% ethyl acetate in hexanes] afforded 30 g (70%) of N-(3-mercapto-2-methyl-propanoyl)-N-cyclopentylglycine t-butyl ester as an oil.

1. customwas bubbled nitrogen gas for 10 minutes
2. concentrationAfter 30 minutes the mixture was concentrated in vacuo
3. washIt was washed once with 3% aqueous HCl and once with water
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customto yield an oily product
8. customPurification via HPLC [15% ethyl acetate in hexanes]