C2Symmetric Chiral NHC Ligand for Asymmetric Quaternary Carbon Constructing Copper-Catalyzed Conjugate Addition of Grignard Reagents to 3-Substituted Cyclohexenones

2008 ◽  
Vol 73 (12) ◽  
pp. 4578-4581 ◽  
Author(s):  
Yasumasa Matsumoto ◽  
Ken-ichi Yamada ◽  
Kiyoshi Tomioka
Keyword(s):  
Conjugate Addition ◽  
Grignard Reagents ◽  
Quaternary Carbon

Conjugate Addition of Grignard Reagents to Nitroarenes: A New Synthesis of 9-Alkylanthracenes, 9-Nitro-10-alkylanthracenes, and 10,10-Dialkylanthrones

Synthesis ◽  
1982 ◽  
Vol 1982 (10) ◽  
pp. 836-839 ◽  
Author(s):  
Nicola Armillotta ◽  
Giuseppe Bartoli ◽  
Marcella Bosco ◽  
Renato Dalpozzo
Keyword(s):  
Conjugate Addition ◽  
Grignard Reagents ◽  
New Synthesis

Asymmetric tandem conjugate addition–protonation to forge chiral secondary C–O bonds for quaternary carbon stereocenters at the nonadjacent β-position

2017 ◽  
Vol 53 (54) ◽  
pp. 7493-7496 ◽  
Author(s):  
San-Ni Hong ◽  
Yang Liu ◽  
Richmond Lee ◽  
Zhiyong Jiang
Keyword(s):  
Conjugate Addition ◽  
Quaternary Carbon ◽  
Efficient Approach

The first asymmetric tandem conjugate addition–protonation to methylene 1,3-oxazolidine-2,4-diones has been developed, thus providing a direct and efficient approach to assemble chiral secondary C–O bonds for quaternary carbon stereocenters and thiols at the nonadjacent β-position.

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