On the pentane skeleton below, drawn in the necessary substituents using wedge and dash notation to produce the structure (2R,3S) – 2,3-dichloropentane.
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- (30) Take a look at the two multi-substituted benzene compounds below. Trinitrotoluene (TNT) has its NO, groups on carbons 2, 4, and 6. Which of the two fits this numerical scheme? Hint: Toluene is a special name for benzene whose primary functional group is a methyl group substituted in place of one of its hydrogens. CH3 CH3 O,N. ZON O,N NO2 NO2 NO2Following name is the number of Kekulé structure that can be drawn for it. Draw these Kekulé structures and show, using curved arrows, how the first contributing structure for each molecule is converted to the second and so forth. Q.) Phenanthrene (5)Predict the IUPAC name for the following structure using Chemaraw software. a. b. C. d. I OH 2-((4a5.65.8aS)-4.8a-dimethyl- 1-methyleneoctahydronaphthalen-4a(2H)-yl)propan-2-ol 2-((4a5.65.8aS)-6.4a-dimethyl- 1-methyleneoctahydronaphthalen-4a(2H)-yl)propan-2-ol 2-((4aS.65.SaS)-8.4a-dimethyl- 1-methyleneoctahydronaphthalen-6a(4H)-yl)propan-2-ol 2-((4aS.65.8aS)-4.4a-dimethyl- 1-methyleneoctahydronaphthalen-6a(2H)-yl)propan-2-ol 2-((4a5.65.8aS)-6.8a-dimethyl- 1-methyleneoctahydronaphthalen-4a(2H)-yl)propan-2-ol
- 10) Using the Rule of Five determine whether or not rameswaralide (recently synthesized in the lab by one of your TAs!) is a terpenoid. Total # of C's: Co,CH3 OH CH3 HO (b) If it is, circle the individual isoprene (5 carbon) units and determine whether it is a: monoterpene, sesquiterpene, diterpene, triterpene (circle one) H,"H H3C O rameswaralide3. Write the structure of the alkene X, that forms the compound below, when treated with ozone (O3) and Zn and Acetic Acid or (CH3)2S workup. X=? X+ (1) Ozone + (2) Zn, Acetic Acid CH(X) (excess) Benzene forms a monosubstituted product with (X) irrespective of it's quantity. So(X) is 1. CH2 = CH/HE 2. CH;CI/Anhy. AICI3 3. CH,ОН/BF3 4. CH;COCI/Anhy.AICI3 3 1
- 2. Write the appropriate resonance structure of the followings. (a) T :OH (b) 3. Place the necessary arrow(s) to convert the structures in the left to the ones in the right (a) NH₂ (b) -Ö-H .. OH تنشيط Windows ⒸOH =Ö-H Name 1. Answer the following miscellaneous questions: Η. H H₂C1 CH₁ H CH3 CH₂CH3 convert to line-segment formula or stick-like diagram L.D. b) Draw the most stable conformational structure for 2-methylpentane looking down at C2-C3 d) Indicate the numbers of mono-chlorinated products for: CH₂ Cl₂ light CH₂ e) What are the structures of C6H10 if its ozonolysis reaction in the presence of Zn and HCl produces CH-C(=O)CH₂CH₂C(=O)CH;Alkenes undergo an addition reaction with borane in tetrahydrofuran (THF). For the reaction below: BH3 THF (solvent) a Draw the structure of the major organic product. Use the wedge/hash bond tools to indicate stereochemistry where it exists. Use wedge and hash bonds ONLY when needed to show reaction stereochemistry. If the reaction produces a racemic mixture, just draw one stereoisomer. opy aste ChemDoodleAn alkene having the molecular formula C₂H₁4 is treated sequentially with ozone (03) and zinc/acetic acid to give the product/s shown. Draw a structural formula for the alkene. NO O You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one. . 99.85 ...ll Sn [F ChemDoodleⓇ 136
- Give the IUPAC name of the product that would form when the following cycloalkene undergoes catalytic hydrogenation. CH3 Name of product Submit Answer = CH3 Retry Entire Group 9 more group attempts remaining Previous Next Save an7.What are the correct names for the following alkyl groups ? CH3 CH3 CH3 H3C - C- CH3CH2CH- CH3CHCH2- CH3CH2CH2CH2- НЗС — С (1) (2) (3) (4) CH3 A. 1= butyl , 2 = sec-butyl , 3 = tert-butyl , 4 = isobutyl %3D B. 1 = tert-butyl ,2= sec-butyl , 3 = butyl , 4 = isobutyl C. 1 = isobutyl , 2 = sec-butyl , 3 = butyl , 4 = tert-butyl D. 1 = sec-butyl , 2 = isobutyl , 3 = butyl , 4 = tert-butyl12. Consider the following polymers, which will have the lowest T? H CH3 H. {CH,-C CH3 (CH2-C (CH2-C ČH3 (a) (b) (c) Which of the polymers in Q. 12 is polar in nature? Name polymer (c) in Q. 12. 13. 14.