Mannich Synthesis of Acetylenic Amino Alcohols in Aqueous Ionic Liquids

2012 ◽  
Vol 22 (6) ◽  
pp. 317-319 ◽  
Author(s):  
Nina I. Simirskaya ◽  
Nikolai V. Ignat’ev ◽  
Michael Schulte ◽  
Sergei G. Zlotin
Keyword(s):  
ChemInform ◽  
2013 ◽  
Vol 44 (16) ◽  
pp. no-no
Author(s):  
Nina I. Simirskaya ◽  
Nikolai V. Ignat'ev ◽  
Michael Schulte ◽  
Sergei G. Zlotin
Keyword(s):  

2003 ◽  
Vol 75 (9) ◽  
pp. 1349-1355 ◽  
Author(s):  
M. Zaidlewicz ◽  
W. Sokól ◽  
A. Wolan ◽  
J. Cytarska ◽  
A. Tafelska-Kaczmarek ◽  
...  

Enolization–aldolization of conjugated ketones, enantioselective synthesis of benzofuryl beta-amino alcohols, and synthesis of p-dihydroxyborylphenylalanine (BPA) and its analogs are described. Aldolization of benzaldehyde with lithium dienolates derived from unhindered conjugated cyclohexenones favored anti- selectivity, whereas syn selectivity was favored for hindered cyclohexenones. Anti-aldols were preferentially formed from dienolborinates derived from conjugated cyklohexenones, however,competing aldolization at the 2-position was observed for hindered ketones. Benzofuryl beta-amino alcohols were prepared using as a key step the enantioselective reduction of the corresponding alpha-bromoacetylbenzofurans with (–)-B- -chlorodiisopinocampheylborane. Ionic liquids were used as solvents for the synthesis of BPA by the Suzuki cross-coupling reaction. The reaction time is short, and a solution of the catalyst in the ionic liquid can be recycled.


2015 ◽  
Vol 17 (20) ◽  
pp. 13480-13494 ◽  
Author(s):  
M. Tariq ◽  
K. Shimizu ◽  
J. M. S. S. Esperança ◽  
J. N. Canongia Lopes ◽  
L. P. N. Rebelo

Selected mixtures of ionic liquids and amino-alcohols exhibit viscosity minima. The interplay of their unique interactions explains such anomalous effects.


2011 ◽  
pp. 110923034559006
Author(s):  
Arnd Garsuch ◽  
D. Michael Badine ◽  
Klaus Leitner ◽  
Luiz H. S. Gasparotto ◽  
Natalia Borisenko ◽  
...  

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