Mass spectral analysis of 3,3-dimethyl-2-butanone results in several fragmentation pathways. Complete the mechanism, and draw the products for the fragmentation pathway that produces a mass spectrum peak at mlz 85. Include all nonbonding electrons and charges. -e a-cleavage H3C. C' radical cationic intermediate a-cleavage products CH3 H3C ČH3 Add electrons and the charge for the resulting radical Draw the a-cleavage products based on the curved cationic intermediate, and add curved arrows for the arrows (one cation and one neutral radical) that are a-cleavage mechanism en route to m/z 85. consistent with a peak at m/z 85. Include all nonbonding electrons. Select Draw Rings More Erase Select Draw Rings More Erase H H.C CH, H;C CH,

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Mass spectral analysis of 3,3-dimethyl-2-butanone results in several fragmentation pathways. Complete the mechanism, and
draw the products for the fragmentation pathway that produces a mass spectrum peak at m/z 85. Include all nonbonding
electrons and charges.
a-cleavage
a-cleavage
products
H3C,
radical cationic
CH3
intermediate
H3C
CH3
Add electrons and the charge for the resulting radical
Draw the a-cleavage products based on the curved
cationic intermediate, and add curved arrows for the
arrows (one cation and one neutral radical) that are
a-cleavage mechanism en route to mlz 85.
consistent with a peak at m/z 85. Include all
nonbonding electrons.
Select
Draw
Rings
More
Erase
Select
Draw
Rings
More
Erase
/ //
H,C
CH;
H3C
CH;
Transcribed Image Text:Mass spectral analysis of 3,3-dimethyl-2-butanone results in several fragmentation pathways. Complete the mechanism, and draw the products for the fragmentation pathway that produces a mass spectrum peak at m/z 85. Include all nonbonding electrons and charges. a-cleavage a-cleavage products H3C, radical cationic CH3 intermediate H3C CH3 Add electrons and the charge for the resulting radical Draw the a-cleavage products based on the curved cationic intermediate, and add curved arrows for the arrows (one cation and one neutral radical) that are a-cleavage mechanism en route to mlz 85. consistent with a peak at m/z 85. Include all nonbonding electrons. Select Draw Rings More Erase Select Draw Rings More Erase / // H,C CH; H3C CH;
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