askall 4. Rank each of the following sets of molecules in order of increasing SN

Question

askall

4. Rank each of the following sets of molecules in order of increasing SN2 reactivity (9%) [A] CH3CH2C CH3CH2I, CI 5. How could you distinguish between the compounds in each of the following pairs using UV spectroscopy? (9%) and and and CI OCH 6. When compound A (CsH120) is treated with HBr, it forms compound B (CsHnBr). The H NMR spectrum of compound A has one singlet (1), two doublets (3, 6), and two multiplets (both 1) (number in parentheses are the relative areas of the signals). The 'H NMR spectrum of compound B has a singlet (6), a triplet (3), and a quarter (2). Please identify compounds A and B. (896) 7. Using any necessary inorganic reagents, show how you would convert acetylene and isobutyl bromide to the following compounds. (6%) [A] meso-2,7-dimethyl-4,5-octanediol, (CH)CHCH CH(OH)CH OH)CH CH(CH3)h [B] ( 2,7-dimethyl-4,5-octanediol

Explanation / Answer

Ans 4 :

SN2 is nucleophilic substitution bimolecular reaction , which occurs in a single step.

Since the reaction involves simultaneous attack of nucleophile and formation of an intermediate , the steric hinderance plays a major role in defining the reactivity of the reactants.

So here :

A] : C6H11Cl < CH3CH2Cl < CH3CH2I

B] : (CH3)2CHBr < CH3CH2CH2Br < CH3CH2Br < CH3Br

C] (CH3CH2)2CHCH2Br < (CH3)2CHCH2Br < CH3CH2CH2CH2CH2Br

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.