Synthesis of cyclic dienamide using ruthenium-catalyzed ring-closing metathesis of ene–ynamide
摘要:
Ring-closing metathesis of ene-ynamide, which has alkene and ynamide moieties in a molecule, using a second-generation ruthenium carbene complex produced nitrogen-containing heterocycles, which have a dienamide moiety, in high yields. Diels-Alder reaction of the cyclized product with dienophile proceeded smoothly to give an indole or quinoline derivative in high yield. (c) 2006 Elsevier Ltd. All rights reserved.
Synthesis of Cyclic Dienamide Using Ruthenium-Catalyzed Ring-Closing Metathesis of Ene-Ynamide
摘要:
[GRAPHICS]Ring-closing metathesis of ene-ynamide using the second-gene ration Grubbs' catalyst produced nitrogen-containing heterocycles, which have dienamide moieties, in high yields. Diels-Alder reaction of the cyclized product and dienophile proceeded smoothly to afford a bi- or tricyclic compound.
Synthesis of Cyclic Dienamide Using Ruthenium-Catalyzed Ring-Closing Metathesis of Ene-Ynamide
作者:Nozomi Saito、Yukako Sato、Miwako Mori
DOI:10.1021/ol017298y
日期:2002.3.1
[GRAPHICS]Ring-closing metathesis of ene-ynamide using the second-gene ration Grubbs' catalyst produced nitrogen-containing heterocycles, which have dienamide moieties, in high yields. Diels-Alder reaction of the cyclized product and dienophile proceeded smoothly to afford a bi- or tricyclic compound.
Synthesis of different ring-size heterocycles from the same propargyl alcohol derivative by ligand effect on Pd(0)
作者:Yuji Kozawa、Miwako Mori
DOI:10.1016/s0040-4039(02)00043-6
日期:2002.2
The type of ligand oil in an allenylpalladium complex, which was prepared from propargyl alcohol derivative and Pd(0), plays an important role in determination of the ring size of the cyclized compound. An intermediary palladium complex bearing a monodentate ligand gave a cyclized compound via palladacycle, while that bearing a bidentate ligand gave one-carbon elongated cyclized compound via a eta(3)-propargylalladium complex. (C) 2002 Elsevier Science Ltd. All rights reserved.
Synthesis of cyclic dienamide using ruthenium-catalyzed ring-closing metathesis of ene–ynamide
Ring-closing metathesis of ene-ynamide, which has alkene and ynamide moieties in a molecule, using a second-generation ruthenium carbene complex produced nitrogen-containing heterocycles, which have a dienamide moiety, in high yields. Diels-Alder reaction of the cyclized product with dienophile proceeded smoothly to give an indole or quinoline derivative in high yield. (c) 2006 Elsevier Ltd. All rights reserved.