- 1. How many stereoisomers exist for 2-chloro-3-methylpentane? 1.now 2. Which of the following substituents has...
A) 1-chloro-4-methylpentane B) 2-chloro-4-methylpentane C) 2-chloro-3-methylpentane D) 3-chloro-2-methylpentane E) 2-chloro-2-methylpentane Arrange the compounds above in order of greatest reactivity to least reactivity for an SN2 reaction [Select) [Select) [Select] [Select) [Select]
d. AG-AH-AS/T 42. How many stereoisomers of 4-chloro-2-methylpentane (CHs):CHCH:CHCICHs, exist? a. I b. 2 c. 3 d. 4 43. What is the major organic product obtained from the reaction of 1-butanol with aqueous HBr at reflux? a. 1-bromobutane b. 2-bromobutane c. 2-bromo-1-butanol d. 1-butene 44. Which of the following alcohols reacts fastest with HBr to give the corresponding alkyl bromide? a. methanol b. ethanol 2-propanol d. 2-methyl-2-propanol C. 45.Which of the following alcohols undergoes the most H2SO4 to give rapid...
Which of the following structures is most stable? 2) How many stereoisomers does the molecule below have? (СН), С+ снен снаси сна OH CH₃ br. a) 3 6) 4 c) 6 d) 8 e 9 3) Which of the following molecules below are chiral? 0) to A Boh A MOH HOS DBr e) 1, 2 and 3 a) Only 1 b) 1 and 3 c) 2 and 3 d) 1 and 3 What is the relationship between the following two...
22. Which of the following structures has the Sconfiguration? CH2CH3 CH2CH3 HECCI ......CH н OH ну H2CH2C сна A) Only 1 B) Only II C) Only I and II D) I, II and III 23. Which of the following structures has the configuration? CH,CH, CH.CH OH ...CHHECH H HỊCHẠC \ D) I, II and III A) Only I B) Only II C) Only I and II 24. What is the relationship between the following compounds? OH om B) Diastereomers C)...
CHM 211 STEREOCHEMISTRY Chapter 5 3. Hexane and 3-methylpentane are examples of: (a) Enantiomers (6) Constitutional isomers (c) Diasercomers (d) Conformers 4. Which of the following is a meso compound? CH CHE CH Htci (a) CH (b) " (d) WH+ CH.CH H- CH.CH Htc CH H 5. Which of the following is NOT true about enantiomer? (a) The have the same boiling point (b) The have the same melting poing (c) The have the same density (d) The have the...
Consider 2,4-dichloro-3-methylpentane: How many stereoisomers are possible for this compound? a)8 b)6 c)4 d)3 e)2
17) Which of the following is a secondary halide? A) CICH2CH2C(CH3)3 B) CICH2CH2CH(CH3)2 C) (CH3)2CCICH2CH3 D) (CH3)3CCHCICH3 E) CICH2C(CH3)CH2CH3 17) What is the IUPAC name of the compound shown below? нс, CH2CH3 С" A) (15,3S)-1,3-dichloro-l-ethyl-3-methylcyclopentane B) (IR,3S)-1,3-dichloro-1-methyl-3-ethylcyclopentane C) (IR.45)-1,4-dichloro-1-ethyl-4-methylcyclopentane D) (IR,3S)-1,3-dichloro-l-ethyl-3-methylcyclopentane E) (IS3R)-1,3-dichloro-3-ethyl-1-methylcyclopentane 18) What type of intermediate is present in the SN2 reaction of cyanide with bromoethane? A) carbocation B) free radical C) carbene D) carbanion E) This reaction has no intermediate 19) Which of the following alkyl chlorides...
A. Enantiomers: Certain substances have the unique property of rotating the plane of plane-polarized light. Such light rotation is detectable with the aid of a polarimeter. In order for a molecule to be optically active it must be chiral. Chiral objects lack a plane of symmetry and are non-superimposable on their mirror images. A sp?- hybridized carbon atom can fulfill these requirements if all four of its substituents are different. 1. Methane a) Prepare a methane molecule and then substitute...
7. The IUPAC name for the followe d in the OH controls a) 3-chloro-2-methylcyclohexanol 5-chloro-2-methylcyclohexanol 2-methyl-3-chlorocyclohexanol d) 2-methyl-5 chlorocyclohexanol e) 1-chloro-4-methylcyclohexanol Which of the following cannot be an electrophile? a) H b) CH2-CH; c) 'NO ) BF; d) Fee ased on the following enery diagram, which compound is formed slowly Reaction ) B from A c) Cfrom B d) from C a) A from B b 10. Which of the following has the highest priority? -0-H -CH=CHCH -CH=NCH -SC-CH; 11....
1) Consider the free radical monochlorination of 3-methylpentane and answer the following: a) How many products (including stereoisomers) are formed? _______ b) How many are chiral? ________ c) Would the major product of free radical bromination possess a chiral carbon? Yes or No 2) Which of the following functional groups can be generated in one step via SN2 or SN1 reaction? (Enter all that apply) a) Aldehyde b) Alcohol c) Alkene d) Alkyne e) Amine f) Carboxylic Acid g) Ester...