Synthesis of 3-Trifluoromethylbenzofurans via Palladium-Catalyzed Tandem Elimination/Annulation of β-Chloro-β-(trifluoromethyl)styrenes with 2-Halophenols
作者:Lian-Hui Chen、Xing-Guo Zhang、Chong Wang、Chen-Liang Deng
DOI:10.1055/s-0033-1338560
日期:——
A palladium-catalyzed tandem elimination and annulation reaction has been developed. In this way, a variety of 3-trifluoromethybenzofurans were prepared in moderate to good yields via tandem reaction of beta-chloro-beta-(trifluoromethyl)styrenes with 2-iodophenols and 2-bromophenols.
Chlorotrifluoroethylidenes: an efficient and convenient approach to their synthesis
作者:Abhay Atmaram Upare、Pradip K. Gadekar、Kiran Jadhav、H. Sivaramakrishnan、Selvaraj Mohana Roopan
DOI:10.1039/d0ra02481c
日期:——
A convenient one step synthesis of chlorotrifluoroalkyl olefins starting from aldehydes was developed. The stable reagent 2-((1-chloro-2,2,2-trifluoroethyl)sulfonyl)benzothiazole was prepared from readily available benzothiazole-2-thiol and halothane. This method comprises using stable 2-((1-chloro-2,2,2-trifluoroethyl)sulfonyl)benzothiazole according to the Julia procedure and presents new opportunities
开发了一种从醛开始的方便的一步合成氯代三氟烷基烯烃。由容易获得的苯并噻唑-2-硫醇和氟烷制备稳定的试剂 2-((1-氯-2,2,2-三氟乙基)磺酰基)苯并噻唑。该方法包括根据 Julia 程序使用稳定的 2-((1-氯-2,2,2-三氟乙基)磺酰基)苯并噻唑,并为合成三氟亚烷基衍生物提供了新的机会。