作者:Radics, Gabor、Schedel, Hartmut、Heistracher, Elisabeth、Sieler, Joachim、Hennig, Lothar、Burger, Klaus
DOI:——
日期:——
Weygand,F. et al., Chemische Berichte, 1966, vol. 99, p. 1461 - 1469
作者:Weygand,F. et al.
DOI:——
日期:——
Hexafluoraceton als Schutzgruppen-und Aktivierungsreagenz in der Aminosäure-und Peptidchemie, 11. Mitt.: Ein neuer präparativ einfacher Zugang zu 2,5-Dioxopiperazinen und 2,5-Dioxomorpholinen
2,5-Dioxopiperazines with symmetrical as well as unsymmetrical substituent pattern can be obtained via 2,2-bis(trifluoromethyl)-1,3-oxazolidin-5-ones, and 2,5-dioxomorpholines via 2,2-bis-(trifluoromethyl)-1,3-dioxolan-4-ones, respectively.
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.