One-Pot Synthesis of Tetraazabis(tropocoronand)s and Podands from benzocycloheptoxazine and α,ω-Polymethylenediamines

Article abstract of DOI:10.1246/bcsj.66.2941

The reactions of benzocyclohept<1,4>oxazine (9) with a 1.2 equivalent of α,ω-alkanediamines (2, n=4-12) in ethanol at 80 deg C afforded tropocoronands (5, n,n'=4,4-12,12) in a one-pot procedure and in high yields, while the reaction of 9 with an exc