Enantioselective Hydrogenation of the Double Bond of Exocyclic α,β-Unsaturated Carbonyl Compounds Catalyzed by Iridium/H8-BINOL-Derived Phosphine-Oxazoline Complexes

2014 ◽  
Vol 3 (7) ◽  
pp. 774-783 ◽  
Author(s):  
Qing Li ◽  
Pin Wan ◽  
Yuwei He ◽  
Yougui Zhou ◽  
Lanning Li ◽  
...  
Synlett ◽  
2018 ◽  
Vol 29 (18) ◽  
pp. 2422-2426
Author(s):  
Bing Yi ◽  
Jiannan Xiang ◽  
Niannian Yi ◽  
Yi Xiong ◽  
Qingjun Huang ◽  
...  

A protocol for the copper-catalyzed oxidative self-coupling of α-amino carbonyl compounds has been developed for the synthesis of tetrasubstituted 1,4-enediones (Z-isomers) in moderate to good yields through the cleavage of four sp3C–H bonds and the simultaneous formation of one C=C double bond in the α-amino carbonyl compound. The strategy has the advantages of using readily available starting ­materials and of high stereoselectivity.


2000 ◽  
Vol 78 (11) ◽  
pp. 1396-1398 ◽  
Author(s):  
Moni Chauhan ◽  
Philip Boudjouk

A variety of α,β-unsaturated esters and cyclic ketones underwent smooth reduction of the carbon–carbon double bond with a combination of inexpensive and readily available trichlorosilane and CoCl2. The reactions are performed under very mild conditions and products are obtained in high yields.Key words: reduction, carbonyl compounds, trichlorosilane, ketones, chemoselectivity.


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