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- -What of the following statements is false about cyclopentadienyl anion? A) It is aromatic B) It has 5 p molecular orbitals C) It has three full p bonding molecular orbitals D) It has one empty p anti-bonding molecular orbital E) It has two empty p anti-bonding molecular orbital 6. What is the correct IUPAC name of the following compound? A) 1-bromo-3-chloro-5-isobutyl-4-methylbenzene B) 5-bromo-1-chloro-3-sec-propyl-2-methylbenzene C) 5-bromo-1-sec-butyl-3-chloro-2-methylbenzene Br D) 1-bromo-3-sec-butyl-5-chloro-4-methylbenzene E) 5-bromo-1-chloro-3-isobutyl-2-methylbenzene II. Draw the structure for the major organic product of each of the following reaction: 7. CN + -> NC Show strerochemistry if necessary HBr 8. (1 equivalent) (45°C) Show strerochemistnuType the name of the following molecule. Be sure to include stereochemistry NH2The compounds drawn should each contain a cyclohexane ring. For all three compounds draw a wedge and dash structure, Chair I, and Chair II conformations. Formula: C9H18 with substitution 1,1- disubstituted with stereochemistry of (R,S) Formula: C7H13Cl with substitution 1,3- disubstituted with stereochemistry of (R,R) Formula: C7H14O with substitution 1,4- disubstituted with stereochemistry (S,S)
- 14. What are the differences between ortho-, meta-, and para-nitroaniline? a) Number of substituents on the benzene ring b) Positions of the substituents on the benzene ring c) Position and number of substituents on the benzene ring d) None of theseWhen one isomer of 3-methyl-1-hexene is treated with H,/Pd, the product is (R)-3-methylhexane. What is the stereochemistry of the original isomer? • (E)-3-methyl-1-hexene • (R)-3-methyl-1-hexene • (S)-3-methyl-1-hexene • (Z)-3-methyl-1-hexeneWhich choice correctly assigns the E/Z configuration of each alkene (I-III) shown below? H3C H3CH2C CI H2N H- HO. NCH2C NHCH3 (H3C)2HC H3CO Br H3CO I II II choose your answer... V ; I| = choose your answer... V : III = choose your answer...
- Draw the structure of the alkyl bromide from which the alkyl acetate shown below was made by SN2 reaction. Hesse ball & stick • C -+ labels • Use the wedge/hash bond tools to indicate stereochemistry where it exists. ● If a group is achiral, do not use wedged or hashed bonds on it. . In cases where there is more than one answer, just draw one. Use "flat" representations of rings, not chairs, in your drawing.Draw the structure for an alkene that gives the following reaction product. CH3 HCI CH3CHCH2CHCH3 CI • Ignore alkene stereochemistry. •You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one. P. opy aste ChemDoodle"Be sure to answer all parts. Name the following compound according to substitutive IUPAC nomenclature. OH (select) (select) (select) (select) 7 of 11 Next> < Prev C F5 PrtSc F6 F4 F7 F10 F8 F9 F3 F11 F12 & # 4 3 7 9 0 CO LO AST
- d) e) b) c) E₂ d) Es in the products. Include stereochemistry where relevant. CH₂₁ CH₂ 1. BH, 2. H₂O₂ OH 100⁰ CH₂OH NaCN 1.0₂ 2. Zn, H H₂O* H, heat.Which is the most stable: 3,4-dimethyl-2-hexene, 2,3-dimethyl-2-hexene, or 4,5-dimethyl-2-hexene? a. Which compound has the largest heat of hydrogenation? b. Which compound has the smallest heat of hydrogenation?Consider the structure of trans-1-ethyl-3-methylcyclohexane. Which statement is fully correct about the most stable chair conformation? A. both groups are in equatorial. B. both groups are in axial. C. methyl group in axial and ethyl group in equatorial. D. methyl group in equatorial and ethyl group in axial.