Exploring the reaction of formaldehyde with α-<i>N</i>-protected amino acid hydrazides
作者:Giancarlo Verardo、Paola Geatti、Marta Mancuso、Paolo Strazzolini
DOI:10.1139/v08-061
日期:2008.7.1
The reaction of formaldehyde with enantiomerically pure α-N-protected amino acid hydrazides is described. The system has been investigated in different solvents, including both aqueous formaldehyde and paraformaldehyde, with the aim of simplifying the final reaction mixture. Aqueous formaldehyde in refluxing THF proved to be the best combination, affording mainly the corresponding monomeric N-methylene
描述了甲醛与对映异构纯 α-N-保护的氨基酸酰肼的反应。该系统已在不同的溶剂中进行了研究,包括甲醛水溶液和多聚甲醛,目的是简化最终反应混合物。回流四氢呋喃中的含水甲醛被证明是最佳组合,主要提供相应的单体 N-亚甲基和 1,3,5-三取代-1,3,5-六氢三嗪衍生物。1H 和 13C NMR 光谱证明,单体形式是高温下唯一存在的形式。关键词:氨基酸酰肼,甲醛,缩合反应,单体N-亚甲基衍生物,低聚物。