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 43. Include all nonbonding electrons and charges. a-cleavage H3C. a-cleavage products radical cationic CH3 intermediate H3C CH3
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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 mlz 43. Include all nonbonding electrons
and charges.
-e-
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 (one cation and one
cationic intermediate, and add curved arrows for the
neutral radical) that are consistent with a peak at mlz 43.
a-cleavage mechanism en route to m/z 43.
Include all nonbonding electrons.
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C
H
H,C
CH,
H;C
CH;](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd7c19e55-e299-4369-8b95-e72108ada78c%2F5e9c973a-0d66-4782-81c9-09f31f5c6921%2Fwx65l4a_processed.jpeg&w=3840&q=75)
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