Question

OCH3 4. Write in the product of this reaction: LiAlH4 N=CCHCH2CH2OH CH; 5. Which type of spectroscopy (IR, 'H NMR, and/or C NMR) would be good to distinguish between ethanol and acetonitrile? State what you would observe for each compound in each type of spectroscopy and whether that type of spectroscopy would be a good way to distinguish between the two compounds.

Answer 1

Anst 4 = NEC-CH-ci-cth-oh LiAlthe, HN-ch-CH= cth eth-oh ся, сн. 5 Li A1H (reducing agent) meduces only nitrite group and not alcohol or Hydroxy group cry-cth-oh CH₂-CEN . Ethanol acetonitrile BIR spectroscopy is good to distinguish between ethanol and acetonitrile a) Ethanol IR & gives peak at 3560-3600 cm 'H-NMR It gives three peaks in spectrum for three types of proton BC-NMR = It gives two peaks in spectrum for two types of edobor b) Acetonitrile y IR = It gives peats at 2250 cm 'gfDMR It gives single peak in spectrum BONHR & It gives two peats for two types. Forbon

Ethanol Acetonitrite 1 Type of spectroscopy IR 'H-NMR 3600-3560 cm! three signales two signales 2250 cm one signals two signals 3 C-NMR The IR spectroscopy is good to distiqursh between ethanol and acetonitrile because both compound having different funetional. group which gives different IR-signals at different frequencies. . 1. The H-NMR also distinguish beto them from set of protons

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