Recent Progress in Haloalkene Synthesis by Hydrohalogenation (HX=HCl, HBr, HI) of Alkynes

Hydrohalogenation of alkynes is one of the fundamental reactions in organic chemistry, as described in textbooks that begins from old time as Reppe's chemistry. This method, which directly affords haloalkenes in a single step, is attractive from both industrial and academic viewpoints. Despite the long history of this reaction, novel efficient catalysts and regioselective and/or stereoselective controlled reactions are still a challenging topic. This review addresses the recent (past decade) advances in this field of organic chemistry.