Cu-Catalyzed Oxidative-Reaction of Tosylmethylisocyanide and Benzyl Alcohols: Efficient Synthesis of 4-(tert-butylperoxy)-5-aryloxazol-2(3H)-ones and 5-Aryloxazol-2(5H)-ones
copper-catalyzed reaction of tosylmethylisocyanide (TosMIC) with benzyl alcohols has been developed using tert-butyl hydroperoxide (TBHP) for the first time. The reaction involves the in-situ oxidation of benzyl alcohol to corresponding benzaldehyde, followed by sequential formal [3+2] cycloaddition/radical addition/ring oxidation reactions, and provides an efficient method for the construction of 4-(ter
Tandem oxidative isocyanide-based cycloaddition reactions in the presence of MIL-101(Cr) as a reusable solid catalyst
作者:Ahmad Shaabani、Heshmatollah Sepahvand、Mostafa M. Amini、Alireza Hashemzadeh、Mahmoud Borjian Boroujeni、Elham Badali
DOI:10.1016/j.tet.2018.02.046
日期:2018.4
The tandem oxidative three-component synthesis of two types of the heterocycles such as furans and imidazopyridines, via isocyanides [1+4] cycloadditionreactions in the presence of MIL-101(Cr) under aerobic conditions are reported. When the 4-toluenesulfonylmethyl isocyanide was used, an unexpected [3+2] cycloadditionreaction of isocyanides with aldehydes accomplished and dihydrophenyloxazoles and