1245447-40-8Relevant academic research and scientific papers
Phosphetes via Transition Metal Free Ring Closure – Taking the Proper Turn at a Thermodynamic Crossing
Roesler, Fabian,Kovács, Máté,Bruhn, Clemens,Kelemen, Zsolt,Pietschnig, Rudolf
, p. 9782 - 9790 (2021)
A transition metal free route to phosphetes featuring an exocyclic alkene unit is presented. In this approach phosphanides are added to a variety of diynes generating phosphaallylic intermediates which depending on the reaction conditions transform either to phosphetes or the corresponding phospholes. Investigation of the reaction mechanism by combined quantum chemical and experimental means identifies phosphole formation as thermodynamically controlled reaction path, whereas kinetic control furnishes the corresponding phosphetes. Structural and luminescence properties of the rare class of phosphetes are explored, as well as for selected key intermediates.
Visible-light-activated copper(i) catalyzed oxidative Csp-Csp cross-coupling reaction: Efficient synthesis of unsymmetrical conjugated diynes without ligands and base
Sagadevan, Arunachalam,Lyu, Ping-Chiang,Hwang, Kuo Chu
supporting information, p. 4526 - 4530 (2016/08/18)
A novel visible-light-promoted copper-catalysed process for the Csp-Csp cross-coupling reaction of terminal alkynes at room temperature is described. The current photochemical method is simple, highly functional group compatible, and more viable towards the construction of bio-active 1,3-unsymmetrical conjugated diynes without the need of bases/ligands, additives and expensive palladium/gold catalysts.
Copper-catalyzed decarboxylative coupling of alkynyl carboxylates with 1,1-dibromo-1-alkenes
Huang, Zheng,Shang, Rui,Zhang, Zi-Rong,Tan, Xiao-Dan,Xiao, Xiao,Fu, Yao
, p. 4551 - 4557 (2013/06/05)
A copper-catalyzed decarboxylative coupling reaction of potassium alkynyl carboxylates with 1,1-dibromo-1-alkenes was developed for the synthesis of unsymmetrical 1,3-diyne and 1,3,5-triyne derivatives. Diverse aryl, alkenyl, alkynyl, and alkyl substituted 1,1-dibromo-1-alkenes can react smoothly with aryl and alkyl substituted propiolates to produce unsymmetrical 1,3-diynes and 1,3,5-triynes with high selectivity and good functional group compatibility.
