Methyl 4-oxobutyrate → 1-Benzhydrylamino-3-carbomethoxypropanephosphonous acid

Participants

Reaction Steps

5.8 parts of freshly distilled 3-carbomethoxypropionaldehyde in 10 parts of sodium-dried dioxan was added to a suspension of 12.4 parts benzhydrylammonium hypophosphite in 60 parts of sodium-dried dioxan at 100° and under nitrogen over 15 minutes. 40 Parts water/dioxan was removed by distillation during the addition such that the temperature remained at 100° or above. The resulting clear solution was cooled and diluted with an equal volume of alcohol to give DL-1-benzhydrylamino-3-carbomethoxypropanephosphonous acid, melting point 162°-164°.

Provenance & Evidence