Weygand,F. et al., Chemische Berichte, 1966, vol. 99, p. 1461 - 1469
作者:Weygand,F. et al.
DOI:——
日期:——
Synthesis of α-N-Ethylamino Acids and their Derivatives
作者:Hartmut Schedel、Klaus Burger
DOI:10.1007/s007060070057
日期:2000.9.22
A new synthesis of alpha-N-ethylamino acids starting from alpha-amino acids using hexafluoroacetone as protecting and activating agent is described. The hexafluoroacetone-protected N-ethylamino acid derivatives obtained are activated lactons. Therefore, they can be directly transformed without the need of an additional activation step with various nucleophiles into the corresponding carboxylic acid derivatives.
An Efficient Synthesis of N-Methylamino Acids and Some of Their Derivatives
作者:Jan Spengler、Klaus Burger
DOI:10.1055/s-1998-1998
日期:1998.1
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.