Tungstate-Catalyzed Decarboxylative Oxidation of N-Alkyl-.alpha.-amino Acids: An Efficient Method for Regioselective Synthesis of Nitrones
摘要:
The tungstate-catalyzed oxidation of N-alkyl-alpha-amino acids with hydrogen peroxide under phase-transfer conditions gives the corresponding nitrones in satisfactory yield.
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.