Identify the stereogenic carbon in (S)- and (R)-limonene, rank the substituents around it and rationalize the assignment of their stereochemical configurations. Hint: When ranking carbons that have multiple bonds, consider the bolded carbon of C=C being connected to 2 carbons and the bolded carbon of C≡C being connected to 3 carbons

For the molecule given, prioritize each substituent on the stereogenic carbon, and assign absolute stereochemistry.

Does a unit of unsaturation of 5 signify anything?

I need an explanation on this problem.

Compounds 1 and 2 were prepared, and the difference in their heats of combustion was found to be 17.2 kJ/mol (J. Am. Chem. Soc. 1961, 83, 606-614): H H 1 Shown below are the lowest-energy conformations of compounds 1 and 2. Identify which drawing matches which compound, and identify which compound has the larger heat of combustion. H H H H |||I 2 H 4 H H The first drawing is compound 1, and compound 1 has a larger heat of combustion because it is the less stable compound. O The first drawing is compound 2, and compound 2 has a larger heat of combustion because it is the less stable compound. The first drawing is compound 2, and compound 2 has a larger heat of combustion because it is the more stable compound. The first drawing is compound 1, and compound 1 has a larger heat of combustion because it is the more stable compound.

Answer parts b and C

5. For the molecules below assign the stereochemical configuration of the selected tetrahedral carbon chiral centers (R, S or N (not a chiral center)) and the alkene (E, Z or N (not a stereocenter)) that are indicated by the arrows (note that you do not have to assign the configuration of every chiral center in the molecule). If the atom in question is not a chiral center or is not a stereocenter circle N for neither. b) RSN RSN HO" RSN EZ N RSN НО. H₂N HO HO OH HO OH RSN RSN CH3 НИ H3 CH₂ RSN RSN RSN EZ N RSN

Draw a skeletal (bond-line) structure of (R)-2,2,3- trimethylhexane. Use a dash or wedge bond to indicate stereochemistry of substituents on asymmetric centers, where applicable.

Draw the sold/dashed wedge structures (skeletal structure) for all stereoisomers of 3,4-dichloro 4-methylhexane. Label each structure with the proper R/S notation Label enantiomers and diastereomers

2. Draw Newman projections (= 60° increments) of the conformations of 2R-bromobutane from C2-C3. Indicate anti, gauche and eclipsed conformations. Indicate the most and least stable conformations.