There are some step given ,to assign R and S configuration.
Step 1. Prioritize the group attached to chiral Carbon from 1 to 4.
Step 2. If the rotation around chiral Carbon center, is clockwise from 1 to 4 position at the lowest priority group is on the dashed line then the configuration will be R , if lowest priority group is not on the dashed line then configuration will be S for clockwise rotation.
Step 2. If the rotation is Anticlockwise ,then configuration will be S given the lowest priority group is on the dashed line. Otherwise R.
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&H5 H What Rand/or S configuration would be used for the following structure? 10 pts Br H и соодносно HC Tonic...
3. Assign R or S configuration to the following molecules: Br F H F . Br F Br -CH CH=CH2 H CH2CH3 CH2CH3 CH3 CH2 --CH3 OH H -CH=CH2 H3C 7 CH3 H CH(CH3)2
3. Assign Ror S configuration to the following molecules: Br 1 F H- F H F Br Br -CHO CH=CH2 S R R H CH2CH3 CH2CH3 --CH₃ CH3 CH2 H -CH=CH2 CH3 H3C HY -CH(CH3)2 OH
3. Assign R or S configuration to the following molecules: Br I F H F H F Br Br -CHE CH=CH2 CH2CH3 CH2CH3 out from H₂C... -CH3 OH CH3CH, -CH=CH2 CH3 CH(CH3)2 H
11) Predict the product of the following transformation: HC H H2O CH2CH2 CH3 Br2 Br H H2C Br CH3 H,Ca A) CH,CH, OH CH3CH, OH B) OH H OH H H2C CH,CH2 Br Br CH,CH, CH' D)
3. Assign R or S configuration to the following molecules: Br F Н. F H- Br CH, Br CHECH, H CH2CH3 CH2CH3 CH, CH, -CHE OH H CH=CH2 H3CH2 HY CH(CH3)2 CH 4. Label each pair of stereoisomers below as A,B,C,D a Enantiomers b. Diastereomers Identical d Meso Compounds
3. Assign Rors configuration to the following molecules: - Br Br F Br -CH CH.CH H CH2CHE CH2CH CH, CH -CH, OH H -CH=CH2 H3C 7 Сн, HI CH(CH3)2 4. Label each pair of stereoisomers below as A,B,C,D a. Enantiomers b. Diastereomers c. Identical d. Meso Compounds u 5. Write the complete stepwise mechanism for this reaction. Show all electron flow with arrows and show all intermediate structures. (10 Points) BE CHO -Br (or CI) Br
Problem of the Day 18 1. (10 pts) Consider the following reaction: Br HBO a. Estimate AH for this reaction (use table 6.1 in your textbook) b. Is AS for this reaction positive or negative? Explain. C. Determine if AG is positive or negative. d. Is the sign of AG (positive or negative) dependent on temperature? Why? TABLE 6.1 BOND DISSOCIATION ENERGIES (AH) OF COMMON BONDS KJ/MOL KCAL/MOL KI/MOL KCAUMO Bonds to H H2C=CH-CH3 HC=C-CH3 KJ/MOL KCAL/MOL 385 92 489...
Problem of the Day 18 1. (10 pts) Consider the following reaction: TO + HBr a. Estimate AH for this reaction (use table 6.1 in your textbook) b. Is AS for this reaction positive or negative? Explain. C. Determine if AG is positive or negative. d. Is the sign of AG (positive or negative) dependent on temperature? Why? TABLE 6.1 BOND DISSOCIATION ENERGIES (AH) OF COMMON BONDS KJ/MOL KCAL/MOL KI/MOL KCAUMO Bonds to H H2C=CH-CH3 HCC-CH3 KJ/MOL KCAL/MOL 385 92...
8. What sequence of reactions would lead to the product outcome shown below? (10 pts) HC= CH - HC H -CH2-CH 9. Give the mechanism for the following reactions: (10 pts) Học-c=c-CH, tava
2). Consider the following intramolecular S2 reaction. no ♡ + HI A) (5 pts) Use the table of Bond Dissociation Enthalpies (at the back of the exam) to calculate the approximate ΔΗπη. B) (3 pts) Is the reaction endothermic or exothermic? Why? C) (6 pts) Draw the Reaction Energy Coordinate Diagram. Label the axes, reactant(s), product(s), transition state(s), intermediate(s), activation energy, and reaction enthalpy. D) (3 pts) In regards to entropy, would you expect the reaction to be favorable, or...