Asymmetric Aldol Reactions Using Boron Enolates: Applications to Polyketide Synthesis

2001 ◽  
pp. 195-206 ◽  
Author(s):  
Ian Paterson ◽  
Victoria A. Doughty ◽  
Gordon Florence ◽  
Kai Gerlach ◽  
Malcolm D. McLeod ◽  
...  
Keyword(s):  
Aldol Reactions ◽  
Asymmetric Aldol

(S)-5-prolylamide-triazole Organocatalyst for Direct Asymmetric Aldol Reactions

2013 ◽  
Vol 17 (14) ◽  
pp. 1563-1568 ◽  
Author(s):  
Ling Liu ◽  
Min-Na Gao ◽  
Yang Li ◽  
Zhen Li ◽  
Liping Song ◽  
...  
Keyword(s):  
Aldol Reactions ◽  
Asymmetric Aldol

ChemInform Abstract: Organocatalytic Asymmetric Aldol Reactions Mediated by a Cysteine-Derived Prolinamide.

ChemInform ◽  
2008 ◽  
Vol 39 (48) ◽  
Author(s):  
Ricardo S. Schwab ◽  
Fabio Z. Galetto ◽  
Juliano B. Azeredo ◽  
Antonio L. Braga ◽  
Diogo S. Luedtke ◽  
...  
Keyword(s):  
Aldol Reactions ◽  
Asymmetric Aldol

Synthesis and evaluation of (S)-proline-containing dipeptidic organocatalysts bound to MBHA resin in asymmetric aldol reactions

2015 ◽  
Vol 56 (44) ◽  
pp. 6047-6051 ◽  
Author(s):  
Elizabeth Machuca ◽  
Giovanna Granados ◽  
Bruno Hinojosa ◽  
Eusebio Juaristi
Keyword(s):  
Aldol Reactions ◽  
Asymmetric Aldol

Intramolecular hydrogen bonding guides a cationic amphiphilic organocatalyst to highly stereoselective aldol reactions in water

RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 62331-62335 ◽  
Author(s):  
Ángel M. Valdivielso ◽  
Alba Catot ◽  
Ignacio Alfonso ◽  
Ciril Jimeno
Keyword(s):  
Hydrogen Bonding ◽  
Intramolecular Hydrogen Bonding ◽  
Structural Motif ◽  
Aldol Reactions ◽  
Asymmetric Aldol ◽  
Neutral Ph ◽  
Intramolecular Hydrogen

A novel amphiphilic acylguanidine organocatalyst using intramolecular hydrogen bonding as a key structural motif is efficient for asymmetric aldol reactions of ketones in water at neutral pH.

Non-linear effects in acyclic amino acid-catalyzed direct asymmetric aldol reactions

2006 ◽  
Vol 47 (37) ◽  
pp. 6657-6661 ◽  
Author(s):  
Pawel Dziedzic ◽  
Weibiao Zou ◽  
Ismail Ibrahem ◽  
Henrik Sundén ◽  
Armando Córdova
Keyword(s):  
Amino Acid ◽  
Aldol Reactions ◽  
Asymmetric Aldol ◽  
Non Linear ◽  
Linear Effects ◽  
Acid Catalyzed

Asymmetric Aldol Reactions under Normal and Inverse Addition Modes of the Reagents.

ChemInform ◽  
2007 ◽  
Vol 38 (44) ◽  
Author(s):  
Saumen Hajra ◽  
Aswini Kumar Giri ◽  
Ananta Karmakar ◽  
Snehadrinarayan Khatua
Keyword(s):  
Aldol Reactions ◽  
Asymmetric Aldol

ChemInform Abstract: Direct Asymmetric Aldol Reactions in Brine Using Novel Sulfonamide Catalyst.

ChemInform ◽  
2009 ◽  
Vol 40 (36) ◽  
Author(s):  
Tsuyoshi Miura ◽  
Yumi Yasaku ◽  
Naka Koyata ◽  
Yasuoki Murakami ◽  
Nobuyuki Imai
Keyword(s):  
Aldol Reactions ◽  
Asymmetric Aldol

Asymmetric aldol reactions employing a cyclic sulfamide chiral auxiliary

1992 ◽  
Vol 33 (44) ◽  
pp. 6661-6664 ◽  
Author(s):  
Kyo Han Ahn ◽  
Dong Jin Yoo ◽  
Jeong Sook Kim
Keyword(s):  
Chiral Auxiliary ◽  
Aldol Reactions ◽  
Asymmetric Aldol

Alternating chiral selectivity of aldol reactions under the confined space of mesoporous silica

2015 ◽  
Vol 51 (96) ◽  
pp. 17116-17119 ◽  
Author(s):  
Chewei Yeh ◽  
Yan-Ru Sun ◽  
Shing-Jong Huang ◽  
Yeun-Min Tsai ◽  
Soofin Cheng
Keyword(s):  
Mesoporous Silica ◽  
Aldol Reaction ◽  
Recyclable Catalyst ◽  
Aldol Reactions ◽  
Water Medium ◽  
Confined Space ◽  
Asymmetric Aldol ◽  
Co Catalysts ◽  
Asymmetric Aldol Reaction ◽  
Chiral Selectivity

The chiral selectivities were altered and high diastereo- and enantio-selectivities of the products were obtained in water medium without adding acid co-catalysts when a primary–tertiary diamine catalyst was immobilized on mesoporous SBA-15 to form a recyclable catalyst for the direct asymmetric aldol reaction of cyclohexanone with p-nitrobenzaldehyde.

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