In 2019,Beilstein Journal of Organic Chemistry included an article by Kobayashi, Yoichi; Mamiya, Yukie; Mutoh, Katsuya; Sotome, Hikaru; Koga, Masafumi; Miyasaka, Hiroshi; Abe, Jiro. Category: bromides-buliding-blocks. The article was titled 《Excited state dynamics for visible-light sensitization of a photochromic benzil-subsituted phenoxyl-imidazolyl radical complex》. The information in the text is summarized as follows:
Visible-light sensitized photoswitches have been paid particular attention in the fields of life sciences and materials science because long-wavelength light reduces photodegradation, transmits deep inside of matters, and achieves the selective excitation in condensed systems. Among various photoswitch mols., the phenoxyl-imidazolyl radical complex (PIC) is a recently developed thermally reversible photochromic mol. whose thermal back reaction can be tuned from tens of nanoseconds to tens of seconds by rational design of the mol. structure. While the wide range of tunability of the switching speed of PIC opened up various potential applications, no photosensitivity to visible light limits its applications. In this study, we synthesized a visible-light sensitized PIC derivative conjugated with a benzil unit. Femtosecond transient absorption spectroscopy revealed that the benzil unit acts as a singlet photosensitizer for PIC by the Dexter-type energy transfer. Visible-light sensitized photochromic reactions of PIC are important for expanding the versatility of potential applications to life sciences and materials science. The results came from multiple reactions, including the reaction of o-Bromobenzaldehyde(cas: 6630-33-7Category: bromides-buliding-blocks)
o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Category: bromides-buliding-blocksIt is a key starting material in the total synthesis of an anticancer agent, (-)-taxol.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary