Synthesis and properties of macrocyclic diazene switch with binaphthalene unit attached via acrylamide linkers
作者:Anna Kicková、Branislav Horváth、Lukáš Kerner、Martin Putala
DOI:10.2478/s11696-012-0247-y
日期:2013.1.1
oxidative macrocyclisation of aniline end-groups. Despite being an equimolar mixture of monomer and dimer, it exhibited remarkable changes in CD spectra due to reversible (E/Z) isomerisation of N=N diazene bonds upon irradiation at 365/465 nm. Although the dimer isomerises from (E) to (Z) isomer 7.4 times faster than the monomer, the latter’s contribution to the change in ellipticity at 307 nm in the
2,2'-二碘-1,1'-联萘与丙烯酸甲酯进行串联Heck反应,得到2-(7 H-二苯并[ c,g ]芴-7-亚烷基)乙酸甲酯。因此,通过在双萘部分逐步构建丙烯酰胺(包括Knoevenagel缩合的Doebner修饰)来制备具有通过丙烯酰胺连接基连接的双萘单元的目标大环重氮,并通过苯胺端基的氧化大环化完成。尽管是单体和二聚体的等摩尔混合物,但由于在365/465 nm照射N = N重氮键可逆(E / Z)异构化,因此CD光谱显示出显着变化。尽管二聚体从(E)异构成(Z异构体比单体快7.4倍,后者在光平稳态下对307 nm椭圆率变化的贡献大2.4倍。