Fill in the box for Methyl acetylacetate
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Fill in the box for Methyl acetylacetate Mass spectrum (5 pts): m/z value Charged Fragment Fragment...
Fill in the table for Methyl acetylacetate 2. (2 pts) Give the structure and name of the major product of the reduction of methyl acetylacetate with sodium borohydride Mass spectrum (5 pts): m/z value Charged Fragment Fragment Lost 116 N/A 85 43
1. Give the fragment at m/z 42 in the mass spectrum of propan-1-ol. a) CH3CH=CH2+ b) CH3CH=CH2• c) CH3CH=CH2— d) CH3CH=CH2 2. Identify a possibility for a fragment at m/z 43 in the mass spectrum. a) CH3CH2CH2+ b) CH3CH2CH3+ c) CH2=C=CH2+ d) CH3CH=CH2+
Given the parent compound, draw the mass spectrum fragment that is observed at m/z 43. Include any hydrogen atoms and the positive charge.
Given the parent compound, draw the mass spectrum fragment that is observed at m/z 71. Include any hydrogen atoms and the charge. Given the parent compound, draw the mass spectrum fragment that is observed at m/z 71. Include any hydrogen atoms and the charge.
The mass spectrum of pentanal shows a peak at m/z 43. The molecular weight of pentanal is 86. Draw the electron flow and products for the formation of the cation, m/z 43 and radical fragment. ? + ? M: 86 m/z 43 cation (M-43) radical
Show what fragment is responsible for the base peak at m/z 44 in the mass spectrum of butan-2-amine
Name: Starting with the mass spectrum of n-heptane What is the molecular ion? What fragment is lost to generate the ion with m/z =71? What cation does the peak at m/z = 43 represent? What group does the spacing between each set of ions represent? Why is the peak at (M-15), corresponding to loss of -CH3 so small? Draw the structure of 2,4-dimethylpentane What is the structure of the ion responsible for m/z = 85? Relative Intensity What is the...
11. The mass spectrum below is that of benzyl 3-methylbutanoate (see structure below). Provide a structure for the fragments at m/z 144, 129, 116, 115, 101, 99, 73, 71 and 43 (You must show the fragmentation pattern) (0.5x84 pts) 100 43 80 71 115 60 99 40 101 88 144 116 20 125 100 75 50 25 m/z 11. The mass spectrum below is that of benzyl 3-methylbutanoate (see structure below). Provide a structure for the fragments at m/z 144,...
Mass Spec Diethyl Phthalate Mass Spectrum Relative Intensity m/z MS diethylphthalate (note: major m/z values of 222, 193, 177, 149 are present) 3) Propose structures for TWO fragments in the mass spectrum. Note: the molecular ion peak at 222 m/z is NOT a fragment.
4. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 100 with a base peak at m/z 43, an IR peak at 1720 cm' which gave the following 'H NMR spectrum. 33 N - PPM 5. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 100 with a base peak at m/z 43, an IR peak at 1720 cm' which gave the following 'H NMR spectrum. doublet 2...