Question

Extra Spectroscopy Practice D Ere just synthesized a new compound, and the following spectroscopic data is obtained: From the mass spectrum, you deduce that the molecular formula is: CgH1202 The infrared spectrum is: MAVEU From the infrared spectrum, what functional groups are definitely present? From the infrared spectrum, what functional groups are definitely absent? The proton NMR spectrum is: 3H 1H 11 10 ow draw your best choice for the structure in the box below.

Answer 1

Extra Spectroscopy Practice D You have just synthesized a new compound, and the following spectroscopic data is obtained • From the mass spectrum, you deduce that the molecular formula is: CH1202 The infrared spectrum is: C-H stretching C-O stretching From the infrared spectrum, what functional groups are definitely present? Carbonyl function group is present. From the infrared spectrum, what functional groups are definitely absent? There is no aldehyde, nitro group, anhydride, nitrile, alkyne and other IR active functional groups . The proton NMR spectrum is: 3H Methyl Proton attached to oxygen Tert butyl group attached to carbony!

Using the information we can deduce the structure.

methyl pivalate Chemical Formula: C6H1202 Molecular Weight: 116.1600 ChemNMR 1H Estimation 3.64 0 127 PPM ChemNMR 13C Estimation 27.4 38.478.80 27.4 27.4 180 160 140 120 100 PPM 80 6 0 40 20 0