Is my answer correct? Is it okay to put the hydrogen in the back for the fourth carbon despite it being in the front in the Fischer projection?
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Is my answer correct? Is it okay to put the hydrogen in the back for the fourth carbon despite it being in the front in the Fischer projection?
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- Predict the expected major product(s) of the following reaction sequence. ی ہیں میں قبر ہیں H 1. t-BuOK, t-BuOH 2. O3, CH2Cl2, -78 °C 3. MezS H OH OH + enantiomer HAs mentioned in Problem 3-53, the statin drugs, such as simvastatin (Zocor), pravastatin (Pravachol), and atorvastatin (Lipitor) are the most widely prescribed drugs in the world. (a) Are the two indicated bonds on simvastatin cis or trans? (b) What are the cis/trans relationships among the three indicated bonds on pravastatin? (c) Why cant the three indicated bonds on atorvastatin be identified as cis or trans?Consider the molecule 1-bromo-2-methylbutane. C3 and C4 should be drawn as Et as in theexample. This group is called an ethyl group and can be considered a sphere about twice the sizeof a methyl group. Draw the following Newman projections sighting down the C1C2 bond... a. The lowest potential energy conformation. b. The highest potential energy staggered conformation.
- 3 In this alkene, highlight the sp²-hybridized carbons in red and the sp³ -hybridized carbons in blue. u X5) Use compounds X, Y and Z (shown below) to answer the following questions. H. H3C" "CH3 ОН CH3 compound X compound Y compound Z a) Is compound X classified as cis, trans or neither? b) Is compound Y classified as E, Z or neither? c) Is compound Z classified as R, S or neither? d) Are compounds X and Y constitutional isomers of each other? (YES or NO) e) Are compounds Y and Z constitutional isomers of each other? (YES or NO) f) Classify compound Y as a primary, secondary or tertiary alcohol. g) Which compound(s) is(are) chiral? h) Give the IUPAC name for compound Z, omitting the absolute configuration (R or S) designation. i) In the indicated spaces below, draw stereoisomers of compounds X, Y and Z. stereoisomer of compound X stereoisomer of compound Y stereoisomer of compound Z(CH3)3CO- is a base that can be made from (CH3)3OH (pKa = 18). Using curved arrow formalism, draw a reaction of this base reacting with NH3 (pKa = 36). Show the products. Which way will be equilibrium lie? Explain.
- Q2 Give the stereochemical relationships between each pair of structures. Examples are same compound, structural isomers, enantiomers, diastereomers. markSI CH, CH, (h) CH,OH CHOH CH, CH, (a) (e) OH HO- H OH HO H- -OH HO H H OH HO- HO H H OH OH HO- CH, CH, CH, CH, CH, CH,2. Here is one cis,trans isomer of 2,4-dimethylcyclohexanol. Complete the alternative chair conformations on the right. OH OH (a) (b) HO H,C CH38. Two structures of Lipitor (a drug used to lower cholesterol) are shown below. (a) Determine the absolute configuration of each indicated stereocenter. Fill in the correct circle. (b) Determine if the two structures are the same compound or stereoisomers. Fill in the correct circle. (a) НО. Carbon a HO O OH Carbon a: OR OS Carbon b H N Carbon b: R OS of H Carbon c: OR OS OH OH Carbon c F Carbon d: R OS OH Carbon d (b) The two structures are: O the same compound O stereoisomers
- 3. Draw the most stable chair conformation of (trans) 3-t-butylcyclohexanol. 4. State whether these two are: a) the same molecule b) different compounds that are not isomers c) constitutional isomers d) diastereomers e) enantiomers H CH3 CH₁ Br Br Br CH3 H Br H CH3CI Q2 / Draw the following compounds so that they are optically active. A) Br-CH2-CH2 -CH(CI)-CH(CI)-CH2-CH2-Br B) OH-CH2-CH(CH3)-CH2-CH(CH3)-CH?OH2. Here is one cis,trans isomer of 2,4-dimethylcyclohexanol. Complete the alternative chair conformations on a and b. OH (a) (b) OH H,C CH,