312612-61-6Relevant articles and documents
Iodine-catalyzed, highly atom-economic synthesis of 9-sulfenylphenanthrenes and polycyclic heteroaromatics in water
Mukherjee, Nilanjana,Chatterjee, Tanmay
supporting information, p. 10006 - 10013 (2021/12/24)
A highly atom-economical and green synthetic method is developed for the oxidative thiolative annulation of 2-alkynyl biaryls with disulfides to synthesize a wide variety of 9-sulfenylphenanthrenes and polycyclic heteroaromatics in water. The transformation requires only a couple of inexpensive reagents, i.e., iodine as a catalyst and hydrogen peroxide (H2O2) as a green oxidant, to furnish the desired products in good to excellent yield. The notable advantages of this protocol over the previously developed synthetic methods are a metal-free, cost-effective, and highly atom economic (>90%) protocol, use of inexpensive reagents as the catalyst and green oxidant, use of water as the reaction medium, very high (>95%) carbon efficiency (water as the major waste), broad substrate scope, high functional group tolerance, high yields of products up to 95%, straight-forward scale-up process upto 10 g scale and significantly, low E-factor (2.25) and high EcoScale score (67).
Synthesis of polycyclic aromatics and heteroaromatics via electrophilic cyclization
Yao, Tuanli,Campo, Marino A.,Larock, Richard C.
, p. 3511 - 3517 (2007/10/03)
(Chemical Equation Presented) A variety of substituted polycyclic aromatics are readily prepared in good to excellent yields under very mild reaction conditions by the reaction of 2-(1-alkynyl)biphenyls with ICl, I2, NBS, and p-O2NC
Synthesis of polycyclic aromatic iodides via ICI-induced intramolecular cyclization
Yao, Tuanli,Campo, Marino A.,Larock, Richard C.
, p. 2677 - 2680 (2007/10/03)
The reaction of 2-(arylethynyl)biphenyls with ICI at -78°C affords substituted polycyclic aromatic iodides in good to excellent yields. The aryl substituents can be either electron-donating or electron-withdrawing groups such as OMe, Me, CHO, CO2Et or NO2 groups. This chemistry has been successfully extended to systems containing a variety of polycyclic and heterocyclic rings.