Gold(III)-Catalyzed Synthesis of Isoxazoles by Cycloisomerization of α,β-Acetylenic Oximes
作者:P. Perumal、C. Praveen、A. Kalyanasundaram
DOI:10.1055/s-0029-1219342
日期:2010.3
β-acetylenic oximes leading to substituted isoxazoles was achieved using AuCl 3 as catalyst, under moderate reaction conditions. The reaction can be applied to various acetylenic oximes and gives good to excellent yields. The methodology is amenable for the selective synthesis of 3-substituted, 5-substituted or 3,5-disubstituted isoxazoles by simply altering the substituents on the acetylenic oximes.
Beckmann rearrangement studies of αβ-acetylenic ketoximes
作者:Z. Hamlet、M. Rampersad
DOI:10.1039/c29700001230
日期:——
It is demonstrated that the newly available αβ-acetylenicketoximes undergo Beckmannrearrangements and/or fragmentations with PCl5 in ether, and, contrary to previous report, the products of the reaction are readily isolated and characterised.