highly stereo- and regioselective hydrophosphorylation of terminalalkynes to E-alkenylphosphorus compounds was well developed. It represents a general and practical hydrophosphorylation method, of which diarylphosphine oxide, dialkylphosphine oxide and dialkyl phosphite all had effective P(O)H parts to react with different types of terminalalkynes. Contrary to previous air-sensitive reports, all the reactions
Halopropiolamide compound, production and use thereof
申请人:TAKEDA CHEMICAL INDUSTRIES, LTD.
公开号:EP0649835A1
公开(公告)日:1995-04-26
There are provided with a novel N-substituted-3-halopropiolamide compound, a method of producing the compound, and a composition for controlling noxious organisms containing the compound. The present compound exhibits superior antimicrobial and antifungal effects. Pest control agents containing the compound can advantageously be used for wide applications.
Hydroiodination of 2-propynamides leading stereoselectively to (Z)-iodopropenamides was achieved under mild conditions at room temperature by the combined use of zinc iodide and tertbutyl iodide. Similarly, the use of zinc bromide in the presence of tert-butyl bromide enabled the synthesis of (Z)-bromopropenamides. (Z)-Halopropenoic esters were also prepared in high yields.