Lariat ethers. Synthesis and cation binding of macrocyclic polyethers possessing axially disposed secondary donor groups
作者:George W. Gokel、Dennis M. Dishong、Craig J. Diamond
DOI:10.1039/c39800001053
日期:——
The synthesis and cationbindingproperties of a series of macrocyclicpolyethers which possess ligating arms that enhance cationbinding is presented.
介绍了一系列具有增强阳离子结合力的连接臂的大环聚醚的合成和阳离子结合特性。
Remarkable catalysis by strontium ion in SN2 and E2 reactions occurring in proximity to a crown ether structure
作者:Giancarlo Doddi、Gianfranco Ercolani、Piero La Pegna、Paolo Mencarelli
DOI:10.1039/c39940001239
日期:——
Strontium ion catalyses the reactions of the crown ether derivatives 1 and 2 with methoxide ion in methanol at 40 °C to yield the product of substitution 3 and elimination 4, respectively.
To provide a compound with which the luminance life of a light emitting device is excellent.
A compound represented by the formula (1):
[wherein,
n represents an integer of 2 or more and 20 or less.
R1 and R2 each independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group or a halogen atom.
Ar1 represents a mono-cyclic or condensed-cyclic arylene group, a mono-cyclic or condensed-cyclic divalent heterocyclic group or a group represented by - N(RX1)-. RX1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group or a monovalent heterocyclic group.
At least two of Ar1 represent prescribed groups.].