Facile consecutive three-component synthesis of 3,5-disubstituted isoxazoles
作者:Christina Görgen、Thomas J. J. Müller
DOI:10.1007/s10593-017-2069-x
日期:2017.4
3,5-Di(hetero)aryl-substituted isoxazoles can be rapidly synthesized in a one-pot fashion by a consecutive three-component alkynylation–cyclization sequence starting from (hetero)aroyl chloride, alkynes, and sodium azide/acetic acid under copper-free palladium catalysis as exemplified by 9 different products.
Trichloroisocyanuric acid mediated one-pot synthesis of 3,5-diarylisoxazoles from <i>α,β</i>-unsaturated ketones
作者:Ashish Bhatt、Rajesh K. Singh、Ravi Kant
DOI:10.1080/00397911.2019.1590848
日期:2019.4.18
Abstract A facile one-pot synthesis of 3,5-diarylisoxazoles from α,β-unsaturatedketones and hydroxylamine hydrochloride is reported. The reaction is efficiently promoted by trichloroisocyanuric acid (TCCA) to afford the desired products, mostly in high yields and in relatively short time. The mild nature of the synthesis and short reaction time are notable advantages of the developed protocol. This
A convenient one-pot synthesis of 3,5-diarylisoxazoles via oxidative cyclisation using catalytic CuBr2 and oxone
作者:Ashish Bhatt、Rajesh K. Singh、Ravi Kant
DOI:10.1016/j.tetlet.2019.03.044
日期:2019.4
A facile one-pot synthesis of 3,5-diarylisoxazoles from α,β-unsaturated ketones and hydroxylamine hydrochloride is reported. The reaction is efficiently promoted by catalytic CuBr2 and Oxone to afford the desired products mostly in high yields and in relatively short time. The mild nature of the synthesis and short reaction time are notable advantages of the developed protocol. This protocol is effective
Copper-catalyzed aerobic oxidative C–O bond formation for the synthesis of 3,5-disubstituted isoxazoles from enone oximes
作者:Yadong Sun、Ablimit Abdukader、Haiyan Zhang、Wanle Yang、Chenjiang Liu
DOI:10.1039/c7ra11436b
日期:——
oxidative coupling reaction of enone oximes using a catalytic quantity of Cu(OAc)2. This method features an inexpensive metal catalyst, molecular oxygen as a green oxidant, good functional group tolerance and readily available starting materials. This attractive method for the synthesis of isoxazole derivatives is of great significance due to the product's versatile reactivity for further transformations.