A Chiral Cyclotrisazobiphenyl: Synthesis and Photochemical Properties

ArticleinOrganic Letters 13(21):5908-11 · November 2011with6 Reads
Impact Factor: 6.36 · DOI: 10.1021/ol202556z · Source: PubMed

A chiral cyclotrisazobiphenyl macrocycle was synthesized conveniently in three steps from the literature known 3,3'-diaminobimesityl in 37-38% overall yield. Irradiation with 302 nm, 365 nm or visible light allows access to different photostationary states (PSSs). These PSSs can be conveniently read out by CD-spectroscopy as each of them exhibits a positive, a negative, or no signal, respectively, at 275 nm.