Synthesis and study of the stability of amidinium/guanidinium carbamates of amines and α-amino acids
作者:Lorenzo Biancalana、Giulio Bresciani、Cinzia Chiappe、Fabio Marchetti、Guido Pampaloni
DOI:10.1039/c6nj03647c
日期:——
Thermally stable amidinium/guanidinium N,N-dialkylcarbamates, including vacuum stable compounds, have been prepared, and then isolated in the solid state, by reaction of tetramethylguanidine (TMG) or 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) with secondary amines under atmospheric pressure of CO2. The same method has been successfully applied to α-amino acids, thus the corresponding carbamates of sarcosine
已经制备了热稳定的idi鎓/胍鎓N,N-二烷基氨基甲酸酯,包括真空稳定的化合物,然后通过四甲基胍(TMG)或1,8-二氮杂双环[5.4.0] undec-7-进行固态分离。烯(DBU)与仲胺在大气压下CO 2。已经成功地将相同方法应用于α-氨基酸,从而获得了肌氨酸,L-脯氨酸和L-苯丙氨酸的相应氨基甲酸酯。所有产品均对水分高度敏感,并已通过分析和光谱(IR,多核NMR)技术进行了表征。