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ChemicalBook CAS DataBase List Boc-Lys(Boc)-OH
2483-46-7

Boc-Lys(Boc)-OH synthesis

9synthesis methods
-

Yield:2483-46-7 100%

Reaction Conditions:

with sodium hydroxide in 1,4-dioxane;water at 20;

Steps:

16 Synthesis of Boc-lysine-Boc

To the solution of Lysine HCl salt in 50 ml 1,4-dioxane/H2O (1:1), 1M NaOH is added until pH reaches 10-11. Then Boc anhydride in dioxane (6.0 g in 20 ml dioxane) is added by an addition funnel. The resulting solution is stirred at room temperature overnight. The mixture is concentrated in vacuo and acidified by 4M KHSO4 until pH=1-2. Extract by Ethyl acetate twice and dried in vacuo. Colorless liquid is obtained and yielding is 100%

References:

US2014/127138,2014,A1 Location in patent:Paragraph 0321; 0322

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