A convenient route to alkynes via phase transfer catalysis
作者:Eckehard V. Dehmlow、Manfred Lissel
DOI:10.1016/s0040-4020(01)98925-2
日期:1981.1
High yield, rapid formations of alkynes from vicdibromides are possible using powered potassium hydroxide and catalytic amounts of lipophilic phasetransfer catalysts. Reasons are given why molar amounts of expensive catalysts were necessary in earlier procedures.
Selective Ruthenium-Catalyzed Hydrochlorination of Alkynes: One-Step Synthesis of Vinylchlorides
作者:Sylvie Dérien、Hubert Klein、Christian Bruneau
DOI:10.1002/anie.201505144
日期:2015.10.5
direct and selectivealkynehydrochlorination is reported and leads to vinylchlorides in excellent yields with atom economy. The reaction proceeds at room temperature from terminal alkynes and provides a variety of chloroalkenes. Only the regioisomer resulting from the formal Markovnikov addition is selectively formed. Mechanistic studies show the stereoselective syn addition of HCl to alkynes at room