作者:Ingrid-Suzy Tamgho、James T. Engle、Christopher J. Ziegler
DOI:10.1021/jo302227z
日期:2012.12.21
amine-terminated polyethers results in the formation of phthalocrown macrocycles. For n = 1 (where n is the number of ether units), a 2 + 2 condensation takes place, but for n = 2 and 3, a 1 + 1 macrocycle formation occurs. The n = 2 phthalocrown is particularly stable due to a strong intramolecularhydrogenbond, but the n = 3 ring hydrolyzes to form a 3-imino-1-oxoisoindoline derivatized crownether species