73084-23-8Relevant academic research and scientific papers
Selectivity for Alkynyl or Allenyl Imidamides and Imidates in Copper-Catalyzed Reactions of Terminal 1,3-Diynes and Azides
Ghorai, Sourav,Lee, Daesung
, p. 697 - 701 (2021/02/01)
Copper-catalyzed reactions of terminal 1,3-diynes with electron-deficient azides to generate either 3-alkynyl or 2,3-dienyl imidamides and imidates are described. The selectivity depends on the diyne substituents and the nucleophile that reacts with the ketenimide intermediate generated from the corresponding triazole precursor. Reactions of 1,3-diynes containing a propargylic acetate afford [3]cumulenyl imidamides, while reactions using methanol as the trapping agent selectively generate 2,3-dienyl imidates. Five-membered heterocycles were obtained from 1,3-diynes containing a homopropargylic hydroxyl or amine substituent.
Reactivity of 3-halopropynols: X-ray crystallographic analysis of 1, 1-dihalocumulenes and 2+2 cycloaddition products
Gulia, Nurbey,Pigulski, Bart?omiej,Szafert, S?awomir
, p. 191 - 204 (2017/07/26)
Reactions of 3-halopropynols and their butadiyne analogues with BF3Et2O or HX(aq) were investigated. Depending on the end group and the reaction conditions, different products were obtained which belonged to two classes: (
