反应详情

The target compound was prepared as a pale yellow oil in an amount 12.9 g at a yield of 67.9% in the same manner as in Example 1 except that 12 g (47.8 mmol) of 5-(N-benzyloxycarbonylamino)pentanoic acid was dissolved in 60 ml of THF and 8.41 g (52.5 mmol) of CDI was added; 14.5 g (143 mmol) of diisopropylamine and 60 ml of THF were added and 89.5 ml (143 mmol) of 1.63N BA solution was added dropwise; 23.5 ml (143 mmol) of methyl p-tolylacetate instead of methyl phenylacetate was dissolved in 60 ml of THF; and 48 ml of saturated aqueous ammonium chloride solution was added to the reaction solution, the reaction was terminated, 100 g of 4N hydrochloric acid was added, and 240 ml of ethyl acetate was further added. The analytical results on the target compound are given below.

1. addition89.5 ml (143 mmol) of 1.63N BA solution was added dropwise
2. customthe reaction was terminated
3. addition100 g of 4N hydrochloric acid was added
4. addition240 ml of ethyl acetate was further added
5. customThe analytical results on the target compound