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- 1) Are the molecules A and B... conformational isomers? Diastereomers? Enantiomers? Position isomers? Non-related? 2) What about the molecules B and C? 3) What about the molecules C and D?(a) (R)-1,1,2-trimethylcyclohexane, draw a three-dimensional representation.1. Name and draw all possible isomers of trimethylcyclopropane. Which of the isomers is chiral?2. If this is chiral, then is it an R or S isomer?
- Which enantiomer is this molecule? R/R? S/S? R/S? S/R? Give your answer by indicating the configuration of the chiral carbons from left to right on the drawing.Which compounds contain chiral centers? (a) 2-Chloropentane (b) 3-Chloropentane (c) 3- Chloro-1-pentene (d) 1,2-Dichloropropane(a) Write the structures of the following compounds and mark them as chiral or achiral. 4 (i) 2-Bromopentane (ii) 3-Bromopentane (iii) 1-Bromo-2-methylbutane (iv) 2-Chloro-3-methylbutane (b) Identify the asymmetric carbon in the chiral compounds. (c) Write the structure of the other enantiomer of the chiral compounds.
- For molecule CH3CH2CH(OH)CH3a. Identify chiral centreb. Draw a pair of enantiomers using 3-dimensional structureHow many chiral center(s) are present in each molecule and how many stereoisomers are possible in each case? a) 2- Chloropentane b) 3- chloropentane c) 3- Chloro- 1- pentene draw the structures of each of the molecules on paper with showing chiral centers with a star/asterisk and mention the number of the stereoisomers for each molecule.How many stereoisomers exist for BrHC=CHCH2CHFCl? A. 1 B. 2 C. 4 D. 8
- How many tetrahedral stereogenic centers does PGF2α contain? Draw its enantiomer. How many of its double bonds can exhibit cis-trans isomerism? Considering both its double bonds and its tetrahedral stereogenic centers, how many stereoisomers are possible for PGF2α?Label each molecule with chiral centers (R) and (S). Which ones have more than one?The facts in Section 5.4A can be used to locate stereogenic centers in any molecule, no matter how complicated. Always look for carbons surrounded by four different groups. With this in mind, locate the four stereogenic centers in aliskiren, a drug introduced in 2007 for the treatment of hypertension.