Question

Organic Chemistry. Please only answer the ones you know. Thank you.

6)2-Methylhexane shows an intense peak in the mass spectrum at z43.Propose a likely structure for this fragment 17) The natural abundances ofchInne's two major isotopes are 35a (75.5%) and 37C1(24.5%). If the mass spectrum of chkrobentene contains a peak at mt l 14 with an abundance of 15.0% cakulate the % abundance of the peak at mt 112.

Answer 1

Ans-16)

CH3 CH3 Нас CH +HC CH3 CH2 CH3 m/e 43 Secondary carboc ation Primary radical 2-methylhexane Most possible fragment CH3 Secondary carboc ation more stable than primary carbocation H3C CH2 CH CH3 primary radical m/e 43 Primary cation Less possible fragment

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