An efficient synthesis of N-arylated, orthogonally protected racemic aspartates
摘要:
A brief and efficient synthesis of variously N-arylated racemic aspartates has been achieved by two consecutive reactions in one-pot, in which imine or equivalent, formed in situ from various anilines and ethyl glyoxylate, reacted with the Reformatsky reagent, tert-butyl 2-bromozinc acetate. Notably the two esters are orthogonally protected for the convenience of further derivatization. (c) 2007 Elsevier Ltd. All rights reserved.
Chelation-controlled diastereoselective construction of N-aryl-, N-acyl/tosylhydrazono β-substituted aspartate derivatives via Barbier-type reaction
作者:Nayyar Ahmad Aslam、Srinivasarao Arulananda Babu、Arya Jayadev Sudha、Makoto Yasuda、Akio Baba
DOI:10.1016/j.tet.2013.05.130
日期:2013.8
involvement of a chelation-controlled TS. The synthesis of functionalized 1,4-diols, cis piperidine-2,3-dicarboxylate derivative and β-ethyl aspartic acid hydrochloride was performed using the N-substituted β-vinyl aspartates obtained in this work. The stereochemistry of representative products was unambiguously established from the single crystal X-ray structure analyses.
An efficient synthesis of N-arylated, orthogonally protected racemic aspartates
作者:Guanglin Luo、Ling Chen、Rita Civiello、Gene M. Dubowchik
DOI:10.1016/j.tetlet.2007.11.060
日期:2008.1
A brief and efficient synthesis of variously N-arylated racemic aspartates has been achieved by two consecutive reactions in one-pot, in which imine or equivalent, formed in situ from various anilines and ethyl glyoxylate, reacted with the Reformatsky reagent, tert-butyl 2-bromozinc acetate. Notably the two esters are orthogonally protected for the convenience of further derivatization. (c) 2007 Elsevier Ltd. All rights reserved.