Enantioselective Friedel–Crafts alkylation of indoles with 2-enoylpyridine-N-oxides catalyzed by glucoBOX-Cu(ii) complex
作者:Jimil George、B. V. Subba Reddy
DOI:10.1039/c2ob25315a
日期:——
glucosamine derived glucoBOX-Cu(II) complex was found to be a unique catalytic system for enantioselectiveFriedel–Craftsalkylation of indoles with 2-enoylpyridine-1-oxides. A large number of 3-alkylated indole derivatives were prepared using 5 mol% glucoBOX-Cu(II) complex in excellent yields with high enantioselectivity up to 99% ee.
Enantioselective Mukaiyama-Michael Reaction of Silyl Enol Ethers to 2-Enoylpyridine<i>N</i>-Oxides Catalyzed by Copper- Bis(oxazoline) Complex
作者:Jimil George、Basi V. Subba Reddy
DOI:10.1002/adsc.201200631
日期:2013.1.16
A catalytic enantioselectiveMukaiyama–Michaelreaction of 2-enoylpyridine N-oxides has been developed using a simple bis(oxazoline)-copper complex. A variety of silylenolethers undergo smooth Michael addition with 2-enoylpyridine N-oxides to furnish the corresponding Michael adducts in high yields with high enantioselectivities (up to 97% ee).