Niu Changrong, Luo Tiejun, Wu Chengtai, et al. STUDIES ON SYNTHESIS OF NEW DIBENZO 16 AND 18 MEMBERED RING N PIVOT LARIAT CROWN ETHERS[J]. 1997,(2).DOI:
New bisbenzo 16 membered ring aza crown ethers (1 ̄2) were prepared by one step reaction of 2
2′ bis( o hydroxy phenoxy)propane(Ⅰa) with N p mkethylphenyl diethanolamine ditosylate(Ⅱa)
and N tosyl diethanolamine ditosylate(Ⅱb)
using sodium hydroxy as condensing agent respectively. The tosyl group of 2 was removed by treatment with 40% HBr in AcOH in the presence of a large amount of phenol to obtain azacrown ether compound(3). Two new N pivot lariat crown ethers (4 ̄5) were prepared by one step condensation of 2
2′ bis( o hydroxy benoxy) ether with Ⅱa and N phenyl diethanolamine ditosylate(Ⅱc)
using sodium hydoxy as condensing agent. New compounds (1 ̄5) were characterized by IR
1H NMR
MS and elemental analysis.
关键词
二苯型氮支链套索冠醚缩合合成
Keywords
dibenzo N pivot lariat crown ethercondensationsynthesis