Retention of a six-membered ring in the reaction of 2-dialkylaminobenzo[e]-1,3,2-dioxaphosphinin-4-ones with pentafluorobenzaldehyde: O,N-exchange at phosphorus
Аннотация:
The title reaction leads to the formation of diastereoisomeric 2-[(dialkylamino)(pentafluorophenyl)methyl]benzo[e]-1,3,2-dioxaphosphinine-2,4-diones in a ratio of 70 : 30. The configuration of chiral centres for the preferable diastereoisomer was determined by single crystal X-ray diffraction analysis.