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P nitro a amino acid esters

A purely ionic hydrogen bond activation mechanism might be involved in the aza-Henry reaction between a-iminoesters, a very reactive subclass of imines, and various nitroalkanes catalyzed by the BINOL phosphoric acid 44 [54]. The corresponding P-nitro-a-amino acid esters were produced in good yields, diastereo- and enantioselectivities (Scheme 29.23). The authors postulated a dual role of catalyst 44 through activation of the a-iminoester by protonation and control over the nitroaUcane/nitronate equilibrium (Scheme 29.24). [Pg.860]


See other pages where P nitro a amino acid esters is mentioned: [Pg.86]    [Pg.139]   
See also in sourсe #XX -- [ Pg.86 ]




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1- Amino-4-nitro

A-Amino acid esters

A-Nitro esters

A-amino esters

Amino acid ester

Nitro esters

Nitro, acids

P-amino acids

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