Syntheses of crown ether-esters with (benzyloxy)methyl side arms using SbPh3 and BiPh3 as templates1
作者:Yoichi Habata、Fumio Fujishiro、Sadatoshi Akabori
DOI:10.1039/p19960000953
日期:——
New crown ether-esters 3a, 3b, 4a, 4b, 4c and 5a with side arms are synthesized by the treatment of (benzyloxy)methyl-substituted diols (1 and 2) with acid chlorides [malonyl chloride and diglycolyl chloride (2,2′-oxydiacetyl chloride)]. SbPh3 and BiPh3 are effective templates for the synthesis of 14-crown-4 ether-esters with (benzyloxy)methyl side arms, and the template effect depends on the structures of both the diols and acid chlorides. Also, it was revealed that the key step in the template synthesis is the formation of a complex between 1 and MPh3(M Sb and Bi) by IR and mass spectral studies. The order of complexing ability between 1 and MPh3 is: 1 + BiPh3 1 + SbPh3 > 1 + AsPh3. In particular, BiPh3 can form stable 1:1 and 2:1 complexes with 1.
通过用酰氯(丙二酰氯和二乙酰氯)处理(苄氧基)甲基取代二醇(1和2),可以合成新的带有侧臂的14冠醚-4酯(3a、3b、4a、4b、4c和5a)。SbPh3和BiPh3是合成带有(苄氧基)甲基侧臂的14冠醚-4醚酯的有效模板,模板效应取决于二醇和酰氯的结构。此外,红外光谱和质谱研究表明,模板合成中的关键步骤是1和MPh3(M Sb和Bi)之间形成络合物。1和MPh3之间的络合能力顺序为:1 + BiPh3 1 + SbPh3 >