MASS-SPECTRAL STUDY OF DIASTEREOMERS ON ELECTRON-IMPACT .2.

Mass spectral studies of diastereomeric dialkyl 2,3-dibromosuccinates reveal that interaction between the functional groups such as COOCH3 a nd Br is reflected in the abundance of various ions and this process c an be rationalized based on the higher population of the most stable c onformation of these molecules in the gas phase, However, the mass spe ctra of diastereomeric dialkyl 2,3-dimethylsuccinates are different si nce the spectra could not be correlated with-their conformation and th is indirectly suggests that the energy difference between the conforme rs may not be very high.