256459-25-3Relevant academic research and scientific papers
One-step synthesis of spiropyridines, a novel class of C2-symmetric chiral ligands, by cobalt(l)-catalyzed [2 + 2 + 2] cycloadditions between bis-alkynenitriles and alkynes
Varela, Jesus A.,Castedo, Luis,Saa, Carlos
, p. 2141 - 2143 (1999)
matrix presented Spiropyridines, a novel series of C2-symmetric ligands, can be obtained in moderate yields by means of Co(l)-catalyzed double cocyclization between bis-alkynenitriles and alkynes. This one-step method allowed the first synthesis of the interesting 7,7′-and 8,8′-spyropyridines from acyclic precursors.
