Gamma Elimination
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Q.
Which of the following is γ- elimination?
None of these
CH3−CH2−H|CH−Br|CH2KOH(alc)−−−−−−→ CH3CH2CH=CH2+HBr
R2−H|C−Cl → R2C:
CH2|Br−CH2−CH2|Br Zn dust−−−−→ △ +Br2+Zn
Q. Consider the following reactions.
(1) (CH3)3CCH(OH)CH3conc. H2SO4−−−−−−−→Δ
(2) (CH3)2CH2CH2CH2(Br)alc. KOH−−−−−−→
(3) (CH3)2CHCH(Br)CH3(CH3)3CO–K+−−−−−−−−−→
(4) (CH3)2C|OH−CH2−CHOΔ→
Which of these reactions(s) will produce Saytzeff product as major product?
(1) (CH3)3CCH(OH)CH3conc. H2SO4−−−−−−−→Δ
(2) (CH3)2CH2CH2CH2(Br)alc. KOH−−−−−−→
(3) (CH3)2CHCH(Br)CH3(CH3)3CO–K+−−−−−−−−−→
(4) (CH3)2C|OH−CH2−CHOΔ→
Which of these reactions(s) will produce Saytzeff product as major product?
- (4) only
- (1), (2) and (4)
- (3) only
- (2) and (4)
Q.
Which of the following is γ- elimination?
CH3−CH2−H|CH−Br|CH2KOH(alc)−−−−−−→ CH3CH2CH=CH2+HBr
R2−H|C−Cl → R2C:
CH2|Br−CH2−CH2|Br Zn dust−−−−→ △ +Br2+Zn
None of these
Q.
Which of the following is γ position in
CH3IV−CIIIH2−CIIH2−Br|CH2I
i
ii
iii
iv
Q.
Which of the following is γ- elimination?
CH3−CH2−H|CH−Br|CH2KOH(alc)−−−−−−→ CH3CH2CH=CH2+HBr
R2−H|C−Cl → R2C:
CH2|Br−CH2−CH2|Br Zn dust−−−−→ △ +Br2+Zn
None of these