Metal Amidoboranes: Superior Double-Hydrogen-Transfer Agents in the Reduction of Ketones and Imines

2012 ◽  
Vol 18 (43) ◽  
pp. 13885-13892 ◽  
Author(s):  
Weiliang Xu ◽  
Guotao Wu ◽  
Wei Yao ◽  
Hongjun Fan ◽  
Jishan Wu ◽  
...  
Keyword(s):  
Hydrogen Transfer ◽  
Double Hydrogen ◽  
Reduction Of Ketones ◽  
Transfer Agents

The long and winding road to new porphycenes

2012 ◽  
Vol 16 (05n06) ◽  
pp. 589-602 ◽  
Author(s):  
Igor Czerski ◽  
Arkadiusz Listkowski ◽  
Jan Nawrocki ◽  
Natalia Urbańska ◽  
Hubert Piwoński ◽  
...  
Keyword(s):  
Fluorescence Polarization ◽  
Hydrogen Transfer ◽  
Single Molecules ◽  
Tert Butyl ◽  
Tautomeric Forms ◽  
By Products ◽  
Double Hydrogen

We describe attempts — not always successful — made over the years to improve the efficiency of porphycene synthesis and to produce novel compounds, custom-designed for specific purposes. New porphycenes are reported, some of them obtained rather unexpectedly as by-products of the planned reactions. Structure and energy computations of possible tautomeric forms in porphycenes substituted by one, two, three, and four tert-butyl groups lead to predictions regarding the kinetics and mechanisms of intramolecular double hydrogen transfer. The occurrence of tautomerization in single molecules of tert-butylsubstituted porphycenes is demonstrated by using fluorescence polarization techniques.

Hydrogen transfer reduction of ketones catalyzed by Fluka K-10 montmorillonite

1998 ◽  
Vol 136 (2) ◽  
pp. 147-151 ◽  
Author(s):  
David Dolmazon ◽  
Raluca Aldea ◽  
Howard Alper
Keyword(s):  
Hydrogen Transfer ◽  
Reduction Of Ketones
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