- Rhodium(II)-Catalyzed Cycloaddition Reactions of Non-classical 1,5-Dipoles for the Formation of Eight-Membered Heterocycles.
Rhodium(II)-Catalyzed Cycloaddition Reactions of Non-classical 1,5-Dipoles for the Formation of Eight-Membered Heterocycles.
Angewandte Chemie (International ed. in English) (2015-09-18)
Dong Jin Lee, Donguk Ko, Eun Jeong Yoo
PMID26376924
ABSTRACT
A new type of intermolecular rhodium(II)-catalyzed [5+3] cycloaddition has been developed. This higher-order cycloaddition between pyridinium zwitterion 1,5-dipole equivalents and enol diazoacetates enables the formation of eight-membered heterocyclic skeletons, which are otherwise difficult to construct. The optimized cycloaddition occurs efficiently under mild conditions with a wide range of pyridinium zwitterions and with high functional-group tolerance.
MATERIALS
Product Number
Brand
Product Description
Rhodium, wire reel, 0.05m, diameter 1.0mm, as drawn, 99.9%
Rhodium, microfoil, disks, 10mm, thinness 0.50μm, specific density 620μg/cm2, permanent mylar 3.5μm support, 99.99%
Rhodium, wire reel, 0.1m, diameter 0.5mm, as drawn, 99.9%
Rhodium, wire reel, 0.1m, diameter 1.0mm, as drawn, 99.9%
Rhodium, wire reel, 0.05m, diameter 0.12mm, as drawn, 99.9%
Rhodium, wire reel, 0.2m, diameter 0.25mm, hard, 99.9%