The effect of intramolecular-hydrogen bonds in the synthesis of novel imidates from a 13-membered dioxadithia crown ether diester
作者:Serdar Karaböcek、Ismail Degirmencioglu、Nevin Karaböcek、Mustafa Er、Kerim Serbest
DOI:10.1002/jhet.5570400412
日期:2003.7
The synthesis and structural properties of three novel imidates, 11,13-bis-(2-amino-ethylimino)-1,10-dioxa-4,7-dithiacyclotridecane (2), 11,13-bis-(3-aminopropylimino)-1,10-dioxa-4,7-dithiacyclotridecane, (3) and 2,11-dioxa-5,8-dithia-13,16,19,22-tetraazabicyclo[10.10.1]tricosa-1(22),12-diene, (4) have been described. These compounds were synthesized by treating 1,10-dioxa-4,7-dithiacyclotridecane-11
三种新型酰亚胺化合物11,13-双-(2-氨基-乙基亚氨基)-1,10-二氧杂-4,7-二硫代环十三烷(2),11,13-双-(3-氨基丙基亚氨基)的合成和结构性质-1,10-二氧杂-4,7-二硫杂环十三烷(3)和2,11-二氧杂-5,8-二硫杂-13,16,19,22-四氮杂双环[10.10.1] tricosa-1(22),已经描述了12-二烯,(4)。这些化合物是通过在N 2下用适当的二胺处理1,10-二氧杂-4,7-二硫代环十三烷-11,13-二酯(1)合成的,其结构已通过元素分析1 H和13表征。C-nmr,红外和质谱研究。元素分析和光谱数据支持拟议的亚氨酸酯结构。此外,通过半经验AM1计算得出的酰亚胺2a-4a和2b-4b的总能量和形成热(图2)显示,具有分子内氢键的酰亚胺2b-4b更稳定(5-10 kcal / mol)。比化合物2a-4a。