作者:Robert W. Hay、Mahesh P. Pujari
DOI:10.1039/dt9840001083
日期:——
The palladium(II)-promoted hydrolysis of methyl glycylglycinate and isopropyl glycylglycinate has been studied at four temperatures (25, 30, 35, and 40 °C) at I= 0.1 mol dm–3 in the pH range 4–5. Under these conditions, and at a 1 : 1 metal to ligand ratio, the peptide esters act as tridentate ligands, donation occurring via the terminal amino-group, the deprotonated amide nitrogen, and the carbonyl
已经研究了钯(II)促进的甘氨酸甘氨酸甲酯和异丙基甘氨酸甘氨酸酯的水解反应,在四个温度(25、30、35和40°C),pH = 4-5的I = 0.1 mol dm –3的条件下进行了研究。在这些条件下,金属酯与配体的比例为1:1,肽酯起三齿配体的作用,通过酯的末端氨基,去质子化的酰胺氮和羰基进行捐赠。报告了由水和氢氧根离子水解酯官能团的速率常数,并计算了活化参数。配位肽酯的碱水解为约。10 5比未质子化的肽酯快十倍 考虑了反应机理。