Chemistry Letters p. 285 - 288 (1981)
Update date:2022-07-29
Topics:
Watanabe, Yutaka
Mukaiyama, Teruaki
Various carboxamides and peptides are prepared in good yields by treatment of free acids and amines in H2O-dichloromethane or aqueous THF with bis(o-nitrophenyl) phenylphosphonate in the presence of tetrabutylammonium hydrogen sulfate or bromide.Carboxylic esters are also successfully converted to amides via carboxylate salts in one-pot.
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