Spontaneous generation and stereoselective coupling of Co2(CO)6-complexed propargyl radicals.
[reaction: see text] The spontaneous generation and stereoselective coupling of Co(2)(CO)(6)-complexed propargyl radicals have been discovered. One- and two-step complementary methods (Method A: (1) HBF(4); (2) CH(2)Cl(2), 20 degrees C; Method B: Tf(2)O, CH(2)Cl(2), 20 degrees C) provided an easy access to synthetically useful d,l-3,4-diaryl-1,5-alkadiynes (de 74-98%).
Melikyan
Gagik G
GG
Department of Chemistry, California State University-Northridge, Northridge, California 91330, USA. gagik.melikyan@csun.edu
Villena
Ferdinand
F
Sepanian
Steve
S
Pulido
Michelle
M
Sarkissian
Hagop
H
Florut
Arthur
A