1. Elimination reactions and principles of reactivity Stereochemistry (a) The alkyl bromide below can undergo an E2 but not in its shown conformation. Draw the conformer (as a line drawing, not a Newman projection) out of which an E2 elimination can occur, with all bonds/groups in the original drawing included. 'Bu = tert-butyl H3C H&C H Br H tBu alkyl bromide (b) Draw the alkene formed in the E2 elimination reaction of this alkyl bromide promoted by potassium tert-butoxide (KOtBu). (c) Indicate if this E2 elimination reaction is stereospecific or stereoselective (write or circle stereospecific or stereoselective)
1. Elimination reactions and principles of reactivity Stereochemistry (a) The alkyl bromide below can undergo an E2 but not in its shown conformation. Draw the conformer (as a line drawing, not a Newman projection) out of which an E2 elimination can occur, with all bonds/groups in the original drawing included. 'Bu = tert-butyl H3C H&C H Br H tBu alkyl bromide (b) Draw the alkene formed in the E2 elimination reaction of this alkyl bromide promoted by potassium tert-butoxide (KOtBu). (c) Indicate if this E2 elimination reaction is stereospecific or stereoselective (write or circle stereospecific or stereoselective)
Chemistry
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Chapter1: Chemical Foundations
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Transcribed Image Text:1. Elimination reactions and principles of reactivity
Stereochemistry
(a) The alkyl bromide below can undergo an E2 but not in its shown conformation. Draw the
conformer (as a line drawing, not a Newman projection) out of which an E2 elimination can occur,
with all bonds/groups in the original drawing included. 'Bu = tert-butyl
H3C
H&C
H
Br
H
tBu
alkyl bromide
(b) Draw the alkene formed in the E2 elimination reaction of this alkyl bromide promoted by
potassium tert-butoxide (KOtBu).
(c)
Indicate if this E2 elimination reaction is stereospecific or stereoselective (write or circle
stereospecific or stereoselective)
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