99770-94-2Relevant articles and documents
Remarkable ligand effect in Ni- And Pd-catalyzed bisthiolation and bisselenation of terminal alkynes: Solving the problem of stereoselective dialkyldichalcogenide addition to the C≡C bond
Ananikov, Valentine P.,Gayduk, Konstantin A.,Beletskaya, Irina P.,Khrustalev, Victor N.,Antipin, Mikhail Yu.
body text, p. 2420 - 2434 (2009/04/08)
We have developed two new catalytic systems based on Ni and Pd complexes to solve the challenging problem of dialkyldichalcogenide (Alk2E 2; E = S, Se) addition to alkynes. A comparative study of two catalytic systems - Ni/PMe2Ph and Pd/PCy2Ph - has revealed that the Ni catalyst is superior with respect to high catalytic activity and more general scope relative to the Pd system. A novel synthetic methodology was developed for the preparation of (Z)-bis(alkylthio)alkenes and (Z)-bis(alkylseleno)alkenes from terminal alkynes with excellent stereoselectivity and high yields.
