TY - JOUR
T1 - Transition metal-mediated intramolecular [2+2+2] cycloisomerizations of cyclic triynes and enediynes
AU - Torrent, Anna
AU - González, Iván
AU - Pla-Quintana, Anna
AU - Roglans, Anna
AU - Moreno-Mañas, Marcial
AU - Parella, Teodor
AU - Benet-Buchholz, Jordi
PY - 2005/3/18
Y1 - 2005/3/18
N2 - (Chemical Equation Presented) Nitrogen-containing 15-membered triacetylenic macrocycles known as 1,6,11-tris(arylsulfonyl)-1,6,11-triazacyclopentadeca-3,8, 13-triynes (1) and enediynic macrocycles called 1,6,11-tris(arylsulfonyl)-1,6, 11-triazacyclopentadeca-3-ene-8,13-diynes (4 and 5) were satisfactorily prepared. [2+2+2] cycloisomerization processes catalyzed by transition metals were tested in the above-mentioned macrocycles. Readily available and familiar cyclotrimerization precatalysts were examined for efficiency. Among them, the RhCl(CO)PPh3)2 complex was found to catalyze the cycloisomerization reaction giving the desired cycloadducts in high yields. © 2005 American Chemical Society.
AB - (Chemical Equation Presented) Nitrogen-containing 15-membered triacetylenic macrocycles known as 1,6,11-tris(arylsulfonyl)-1,6,11-triazacyclopentadeca-3,8, 13-triynes (1) and enediynic macrocycles called 1,6,11-tris(arylsulfonyl)-1,6, 11-triazacyclopentadeca-3-ene-8,13-diynes (4 and 5) were satisfactorily prepared. [2+2+2] cycloisomerization processes catalyzed by transition metals were tested in the above-mentioned macrocycles. Readily available and familiar cyclotrimerization precatalysts were examined for efficiency. Among them, the RhCl(CO)PPh3)2 complex was found to catalyze the cycloisomerization reaction giving the desired cycloadducts in high yields. © 2005 American Chemical Society.
U2 - 10.1021/jo048056p
DO - 10.1021/jo048056p
M3 - Article
VL - 70
SP - 2033
EP - 2041
IS - 6
ER -