59335-14-7Relevant academic research and scientific papers
Photooxidation of oxazolidine molecular switches: Uncovering an intramolecular ionization facilitated cyclization process
Chen, Qiaonan,Sheng, Lan,Du, Jiahui,Xi, Guan,Zhang, Sean Xiao-An
, p. 5094 - 5097 (2018/05/26)
Photooxidation of oxazoline (OXA) molecular switches through media-induced intramolecular ionization is reported. The formation of the photooxidation product occurs by attack of the flexible donor group (-CH2CH2OH) to the adjacent CC with 1O2 as the oxidant. The novel seven-membered ring sub-structure of the photooxidation product was inferred by HRMS, IR and 1H NMR spectroscopy. Additionally, acid released from solvent photolysis was found to affect the product formation and efficiency of the photooxidation.
Silica-mediated synthesis of indolinooxazolidine-based molecular switches
Szalóki, Gy?rgy,Sanguinet, Lionel
, p. 3949 - 3956 (2015/05/05)
A novel and convenient method for the synthesis of photochromic compounds is reported here. It is based on the use of commercially available untreated silica, as an efficient catalyst to perform the condensation between indolinooxazolidine derivatives and aromatic aldehydes under solvent-free conditions. The scope and limitations of this transformation were investigated and several novel photochromic indolinooxazolidines were synthesized. This methodology can also be applied to the synthesis of other photoactive compounds such as spiropyrans or spirooxazines. According to our working protocol the reaction did not require any solvent or additional reagents and gave the products within 10 min in isolated yields of up to 90%.
