Identify the relationship between the following compounds, (2R,4R)-2,4-dichloropentane and (2R,4S)-2,4-dichloropentane. A. Enantiomers B. identical C. different compounds D. Diastereomers
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- Rank the compounds in each group in order of increasing boiling point. a. CH3(CH2)4I, CH3(CH2)sI, CH3(CH)gI b. CH;CH,CH,NH2, (CH3);N, CH3CH2CH,CH3 c. (CHa),COC(CH3)3, CHa(CH2)30(CH)¿CH3, CH3(CH2);OH COH d. HO. Br е. OH f.27. How many different stereoisomers are there for 2-bromo-3-chloro-5-methylhexane? A. two B. three C. four D. nine33. What is each compound's systematic name? a. CH₂C=CCH₂CHCH, b. CH₂C=CCH₂CHCH₂ Br CH₂CH₂CH₂ CH₁ c. CH₂C=CCH₂CCH, d. CH₂CHCH₂C=CCHCH CH, CH,
- Reagents a. C6H5CHO b. NaOH, ethanol h. BrCH2CH=CH2 i. Na* OEt, ethanol j. Br2, H* k. K* t-BuO c. Pyrrolidine, cat. H* d. H2C=CHCN e. H3O* f. I. CH2(CO2ET)2 -CH2CH2CN LDA m. heat g. ELOC(=0)CO2ET Select reagents from the table to synthesize this compound from cyclopentanone. Enter the letters of the chosen reagents, in the order that you wish to use them, without spaces or punctuation (i.e. geda).Which of the following pairs are stereoisomers? a. Propanoic acid and lactic acid b. S-(+)-limonene and R-(-)-limonene c. Ethyl alcohol and dimethyl ether d. None of the choices e. 2-methylpropane and butane18. How many isomers does dichlorocyclobutane have? Consider both constitutional isomers and stereoisomers! A.2 B. 3 C. 4 D. 5 E. 6
- How many stereogenic carbons are there in zuranolone? A. 2 B. 4 C. 6 D. 8 zurandone CNDraw the structure for each compound. a. (R)-3-methylhexane b. (4R,5S)-4,5-diethyloctane c. (3R,5S6R)-5-ethyl-3,6-dimethylnonane d. (3S,6S)-6-isopropyl-3-methyldecane2. Which member of each of the following pairs of molecules has the higher boiling point? a. CH;CH2-N-CH;CH; or CH;CH,CH,CH,CH,NH, CH,CH3 b. Methanol or methylamine c. Propylamine or butane 3. Compare the boiling points of methylamine, dimethylamine and trimethylamine. Explain why they are different.
- 4. Syn and anti addition can occur with alkenes. 1. Describe syn and anti addition. b. Give an example of syn addition to an alkene and explain why it is syn. c. Give an example of anti addition to an alkene and explain why it is anti. 5. The following reactions shows the dehydration of 2-methylcyclohexanol. Why is 1-methylcyclohexene the major product? X OH H3PO4 84% 16%Give the products formed when benzaldehyde and benzoic acid are treated with the given reagents. a. Tollen’s reagentb. phenylhydrazine, H+c. HCNd. NH2OHe. 1 mole H2, Nif. 1 mole CH3OH, H+g. LiAlH4 then H2O, H+h. 2 moles CH3OH, H+i. CH3MgCl, then H2O, H+j. H2Oa. Explain why N-methylethanamine has a higher boiling point than trimethylamine even though they have the same molecular weight b. Explain the observed trend in the melting points for four isomers of molecular formula C7H16