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Predict the products of reaction of pent-1-yne with the
Chapter 21, Problem 33SP(choose chapter or problem)
Problem 33SP
Predict the products of reaction of pent-1-yne with the following reagents.
(a) 1 equivalent of HCl
(b) 2 equivalents of HCl
(c) Excess H2, Ni
(d) H2, Pd/BaSO4, quinolone
(e) 1 equivalent of Br2
(f) 2 equivalents of Br2
(g) cold, dilute KMnO4
(h) warm, concd. KMnO4,NaOH
(i) Na, liquid ammonia
(j) NaNH2
(k) H2SO4/HgSO4,H2O
(l) Sia2BH, then H2O2, -OH
Questions & Answers
QUESTION:
Problem 33SP
Predict the products of reaction of pent-1-yne with the following reagents.
(a) 1 equivalent of HCl
(b) 2 equivalents of HCl
(c) Excess H2, Ni
(d) H2, Pd/BaSO4, quinolone
(e) 1 equivalent of Br2
(f) 2 equivalents of Br2
(g) cold, dilute KMnO4
(h) warm, concd. KMnO4,NaOH
(i) Na, liquid ammonia
(j) NaNH2
(k) H2SO4/HgSO4,H2O
(l) Sia2BH, then H2O2, -OH
ANSWER:
Solution:
Step 1
- Reaction between pent-1-yne with 1 equivalent of HCl
(pent-1-yne )