N-acylimidazolidin-2-ones: new chiral auxiliaries for carboxylic acid alkylation
摘要:
Chiral N-acylated imidazolidin-2-ones, readily available from aminoethanols in three steps through the nucleophilic opening of oxazoline intermediates, have been demonstrated to undergo highly diastereoselective benzylations and methylations via their sodium enolates. In most cases, the resulting products are highly crystalline, and the chiral auxiliaries can be readily recycled. (C) 1997 Elsevier Science Ltd.
An Efficient and Versatile Method for the Synthesis of Optically Active 2-Oxazolines: An Acid-catalyzed Condensation of Ortho Esters with Amino Alcohols
Diversity-oriented synthesis of amino acids using chiral enolates
作者:Subhabrata Sen、Siva R. Kamma、Venkata R. Potti、Y.L.N. Murthy、Avinash B. Chaudhary
DOI:10.1016/j.tetlet.2011.08.052
日期:2011.10
We report a facile diversity oriented synthesis of α- and β-amino acids, by utilizing the pluripotent α-methylene group in a chiral bicyclic lactam as our key point of transformation.
An Efficient and Versatile Method for the Synthesis of Optically Active 2-Oxazolines: An Acid-catalyzed Condensation of Ortho Esters with Amino Alcohols
作者:Kazuyuki Kamata、Isao Agata、A. I. Meyers
DOI:10.1021/jo971161x
日期:1998.5.1
N-acylimidazolidin-2-ones: new chiral auxiliaries for carboxylic acid alkylation
Chiral N-acylated imidazolidin-2-ones, readily available from aminoethanols in three steps through the nucleophilic opening of oxazoline intermediates, have been demonstrated to undergo highly diastereoselective benzylations and methylations via their sodium enolates. In most cases, the resulting products are highly crystalline, and the chiral auxiliaries can be readily recycled. (C) 1997 Elsevier Science Ltd.