Convenient Syntheses of Methyl 2-Bromo- and 2-Iodo-2,3-butadienoates
作者:Thomas Gillmann、Stefan Heckhoff、Thomas Weeber
DOI:10.1080/00397919408010226
日期:1994.8
Abstract Syntheses of methyl 2-bromo- and 2-iodo-2,3-butadienoates 3 and 6 from readily available starting materials are described. 3 and 6 will be valuable building blocks for the synthesis of 2-aryl and 2-alkenyl substituted alka-2,3-dienoates via Palladium-catalyzed cross-coupling reactions.
A novel one-pot approach to oxidative aromatization and bromination of pyrazolidin-3-one with HBr-H<sub>2</sub>O<sub>2</sub> system
作者:Shanguang Yang、Jingjing Liu、Zhudan Jin、Wei Tian、Hao Sun、Mingliang Wang
DOI:10.1515/hc-2018-0046
日期:2018.6.27
Abstract An efficient and green one-pot method for the oxidative aromatization and bromination of pyrazolidin-3-ones under mild conditions with a HBr-H2O2 system was developed. A mechanism was proposed.