Alpha,omega-diamino aliphatic ethers react under ambient conditions with dimethyl alpha,omega-dicarboxylates, in methanol as a solvent, to give the cyclic diamides in good yields. Their subsequent reduction with a borhoydride-dimethyl sulphide complex affords the respective diazacoronands.
Burchard, T.; Cox, B. G.; Firman, P., Berichte der Bunsen-Gesellschaft, 1994, vol. 98, # 12, p. 1526 - 1533
作者:Burchard, T.、Cox, B. G.、Firman, P.、Schneider, H.