Question
please answer all
CHEM 23 Themajor product of the dehydracion of 3,3-dimethy1-2-butanol is A) 3,3-dinethyi-i-buteze (3) 3,3-dimethyi-2-butene (c) 2,3-dinechyl-2-butene (D) 2,3-dimethyl-1-butene Br 24. ia the (E)-(2) system, which has a (Z) designation? (A) only I (B) only II (C) both (D) neither in the product of this reaction X isand is (A) , H (B) CI, CI (C) H, Cl (D) C1 , H Lv In this reaction, the intermediate is I or II and the product is III or IV. Which is true? (A) The intermediate is I and the product is III. (B) The intermediate is I and the product is IV (C) The intermediate is II and the product is IIL. (D) The intermediate is II and the product is IV 27. The product of this reaction is ci ci (C) CH,-CH-CH, Br Br (D) CH,-CH-CH ci Br Br Ci
Explanation / Answer
23. answer: C
24. answer: c ( Z means same prior groups on same side)
25. answer: c
26. answer: A
27. answer: D (Br involes in cyclic intermediate)
