27. The Correct option is :
28. The Correct option is :
29. The Correct option is :
Question 27 (4 points) Which of the following is a hemiacetal? 에 OH LOH 영 OCHE...
Question 37 (4 points) Which one of the following compounds is non-aromatic? Note: lone pairs are not shown. s NH o N
which molecule is the weakest base?
Question 9 (4 points) Which molecule is the weakest base? NH HC -NH₂ FC NH
Question 5 (4 points) What is the major product of the following reaction? 1. NaOET Eto ΟΕΙ 2. Hot O OE EIO OH OE O O- EIO OH OEt OE EtO 애 OEt Question 6 (4 points) Friedel-Crafts acylation reactions cannot be performed on benzoic acid because: The carboxylic acid group gets acylated instead of the aromatic ring. The carboxylic acid group is moderately deactivating preventing any substitution on the aromatic ring. The carboxylic acid group attacks the Lewis acid...
Question 5 (4 points) Which of the following is a hemiacetal? я ОСН3 I OCH ОН ОН Р он ОН Н OCH3
Question 28 (4 points) Which one of the following compounds is antiaromatic? Note: lone pairs are not shown. + o
Question 17 (4 points) Which molecule is the strongest base? NH2 NC NH NH2 Question 18 (4 points) Classify the structure below by Configuration, Family, Backbone, and # of Chirality Centers: CH2OH HO -H H -OH H -OH CH OH D, hexose, ketose, 3 D, pentose, aldose 4 OL, hexose, ketose, 3 L, pentose, aldose, 4
Question 47 (2 points) Which one of the following compounds is aromatic? S - II IV a) III Ob) Oc) II O d) IV Question 48 (2 points) Predict the product(s) for the following reaction: NaNH2, NH3 NH2 -NH₂ que "NH2 a) I, II and III b) I and II c) III and I d) II and III
Question 27 (2 points) Which of the following substituents will not direct the incoming group to the ortho/para position during electrophilic aromatic substitution? Oa) -OCOCH3 ob) -COOCH3 OC) -CH2CH3 od) -N(CH3)2 Question 28 (2 points) Provide the reagents necessary to carry out the following conversion. OH OH B Br Br oa) Br2, hn ob) HBr (3 moles) oc) Br2, FeBr3 od) Br2
Question 27 (2 points) Saved Which of the following substituents will not direct the incoming group to the ortho/para position during electrophilic aromatic substitution? Oa) -OCOCH3 Ob) -COOCH3 Oc) -CH2CH3 Od) -N(CH3)2 Question 28 (2 points) Saved Provide the reagents necessary to carry out the following conversion. OH OH Br Br Br Oa) Br2, hn Ob) HBr (3 moles) O c) Br2, FeBr3 o d) Br2
QUESTION 10 Which of the following is the correct structure of a nucleotide with a purine for the base? NO "NH2 OPO Ob. O=P-OCH O=P- OCH NH NH2 O=P-OCH, N NH2 NO=P-0 CH 0 Od.