Pramanik, Milan; Mathuri, Ashis; Sau, Sudip; Das, Monojit; Mal, Prasenjit published their research in Organic Letters in 2021. The article was titled 《Chlorinative Cyclization of Aryl Alkynoates Using NCS and 9-Mesityl-10-methylacridinium Perchlorate Photocatalyst》.Electric Literature of C7H8O2 The article contains the following contents:
In a chlorinative cyclization, Mes-Acr-MeClO4 acted as a visible-light photocatalyst to obtain 3-chlorocoumarins I [Ar = Ph, 4-ClC6H4, 1-naphthyl, etc.; R = H, 7-Me, 6-MeO, etc.] from aryl alkynoates and N-chlorosuccinimide (NCS). The radical initiated reaction proceeded in a cascading manner via Cl- addition to alkynoates. Next, 5-exo-trig spirocyclization and subsequent 1,2-ester migration led to the formation of C-C and C-Cl bonds. In the experiment, the researchers used m-Methoxyphenol(cas: 150-19-6Electric Literature of C7H8O2)
m-Methoxyphenol(cas: 150-19-6) may be used in synthesis of:C(4) symmetric calix[4]resorcinarene, 2-nitroso-5-methoxyphenol, 6-methoxy-2(3H)-benzoxazoloneElectric Literature of C7H8O2
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem