2-​Pyrrolidineacetic acid, 1-​[(1,​1-​dimethylethoxy)​carbonyl]​-​, methyl ester, (2S)​-的合成路线有哪些？

基本信息：
中文名称 2-​Pyrrolidineacetic acid, 1-​[(1,​1-​dimethylethoxy)​carbonyl]​-​, methyl ester, (2S)​-
英文名称 2-​Pyrrolidineacetic acid, 1-​[(1,​1-​dimethylethoxy)​carbonyl]​-​, methyl ester, (2S)​-
英文别名 1-piperidinecarboxylic acid,2-(2-hydroxyethyl)-,1,1-dimethylethyl ester,(2s);(2S)-2-(2-hydroxy-ethyl)-piperidine-1-carboxylic acid tert-butyl ester;methyl 2-((2S)-N-tert-butyloxycarbonylpyrrolidin-2-yl)acetate;(S)-1-N-Boc-piperidine-2-ethanol;tert-butyl (2S)-2-(2-methoxy-2-oxoethyl)-1-pyrrolidinecarboxylate;(s)-(-)-n-boc-piperidine-2-ethanol;(2S)-N-tert-butoxycarbonyl-2-(2-hydroxyethyl)piperidine;(s)-2-(2-hydroxy-ethyl)-piperidine-1-carboxylic acid tert-butyl ester;(2S)-tert-Butyl 2-(2-methoxy-2-oxoethyl)pyrrolidine-2-carboxylate;tert-butyl (S)-2-(2-hydroxyethyl)piperidine-1-carboxylate;(S)-tert-butyl 2-(2-hydroxyethyl)piperidine-1-carboxylate;(S)-1-Boc-Piperidine-2-Ethanol;
CAS号 88790-37-8

合成路线：
1.通过甲醇和(L)-2-二氮杂乙酰基吡咯烷-1-羧酸叔丁酯合成2-​Pyrrolidineacetic acid, 1-​[(1,​1-​dimethylethoxy)​carbonyl]​-​, methyl ester, (2S)​-，收率约96%；

2.通过二碳酸二叔丁酯合成2-​Pyrrolidineacetic acid, 1-​[(1,​1-​dimethylethoxy)​carbonyl]​-​, methyl ester, (2S)​-，收率约93%；

更多路线和参考文献可参考