66866-69-1Relevant academic research and scientific papers
Preparation method of N-trimethyl silicon ethoxycarbonyl-N-methyl-L/D-leucine
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Paragraph 0078; 0082; 0096; 0100, (2021/06/02)
The invention relates to a preparation method of N-(trimethylsilyl) ethoxycarbonyl group-N-methyl-L/D-leucine. The preparation method comprises the following steps: adding N-methyl-L/D-leucine hydrochloride, a trimethylsilylethoxycarbonyl protecting group reagent and alkali into a mixed solution of a polar solvent and water, and carrying out a reaction, so as to obtain the N-trimethylsilylethoxycarbonyl-N-methyl-L/D-leucine. According to the preparation method, the N-trimethyl silicon ethoxycarbonyl-N-methyl-L/D-leucine with high chiral purity, high chemical purity and high yield can be obtained, the chiral purity and the chemical purity can reach 99% or above, the yield can reach 60% or above, and the preparation method is simple in process, mild in condition and suitable for being applied to large-scale industrial production.
An efficient synthesis of N-methylamino acids and some of their derivatives
Spengler, Jan,Burger, Klaus
, p. 67 - 70 (2007/10/03)
N-Methylamino acid derivatives are obtained in high yield by a stereoselective one-pot procedure from hexafluoroacetone protected amino acids via N-chloromethylation and treatment with triethylsilane/trifluoroacetic acid.
