Synthesis of azacrown ethers and benzocryptands by macrocyclization of podands at high concentrations of reactants
作者:M. S. Oshchepkov、V. P. Perevalov、L. G. Kuzmina、A. V. Anisimov、O. A. Fedorova
DOI:10.1007/s11172-011-0075-1
日期:2011.3
The reactions of 1,2-bis(2-Y-ethoxy)benzenes, N,N-bis(2-Y-ethyl)-N-phenylamines, or 2,6-bis(Y-methyl)pyridines (Y = I, Br, or OTs) with α,ω-polyoxaalkanediamines or diazacrown ethers in the presence or absence of alkali carbonates in a concentrated acetonitrile solution of the reactants afforded the corresponding azacrown ethers or cryptands in high yields.
1,2-bis(2-Y-乙氧基)苯、N,N-bis(2-Y-乙基)-N-苯基胺或2,6-bis(Y-甲基)吡啶(Y = I、Br或OTs)与α,ω-聚氧烷二胺或二氮冠醚在浓缩的乙腈溶液中,存在或不存在碱性碳酸盐的条件下反应,产生了相应的氮冠醚或隐蔽配体,收率很高。