(a)
Interpretation:
Whether two molecules A and B, which are isomers of each other, are enantiomers, diastereomers, or constitutional isomers is to be determined for the condition that they have the same IHD.
Concept introduction:
If two molecules are isomers, they have the same molecular formula. If they have different connectivity of atoms, they are constitutional isomers. If they have the same connectivity, they must be stereoisomers. Stereoisomers may be enantiomers or diastereomers, depending on whether they have nonsuperimposable mirror images.
(b)
Interpretation:
Whether two molecules A and B, which are isomers of each other, are enantiomers, diastereomers, or constitutional isomers is to be determined for the condition that they have the same IHD.
Concept introduction:
If two molecules are isomers, they have the same molecular formula. If they have different connectivity of atoms, they are constitutional isomers. If they have the same connectivity, they must be stereoisomers. Stereoisomers may be enantiomers or diastereomers, depending on whether they have nonsuperimposable mirror images.
(c)
Interpretation:
Whether two molecules A and B, which are isomers of each other, are enantiomers, diastereomers, or constitutional isomers is to be determined for the condition that they have the same IHD.
Concept introduction:
If two molecules are isomers, they have the same molecular formula. If they have different connectivity of atoms, they are constitutional isomers. If they have the same connectivity, they must be stereoisomers. Stereoisomers may be enantiomers or diastereomers, depending on whether they have nonsuperimposable mirror images.
(d)
Interpretation:
Whether two molecules A and B, which are isomers of each other, are enantiomers, diastereomers, or constitutional isomers is to be determined for the condition that they have the same IHD.
Concept introduction:
If two molecules are isomers, they have the same molecular formula. If they have different connectivity of atoms, they are constitutional isomers. If they have the same connectivity, they must be stereoisomers. Stereoisomers may be enantiomers or diastereomers, depending on whether they have nonsuperimposable mirror images.
(e)
Interpretation:
Whether two molecules A and B, which are isomers of each other, are enantiomers, diastereomers, or constitutional isomers is to be determined for the condition that they have the same IHD.
Concept introduction:
If two molecules are isomers, they have the same molecular formula. If they have different connectivity of atoms, they are constitutional isomers. If they have the same connectivity, they must be stereoisomers. Stereoisomers may be enantiomers or diastereomers, depending on whether they have nonsuperimposable mirror images.
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Organic Chemistry: Principles and Mechanisms (Second Edition)
- 4. (a) Draw all possible isomers of C4H3CI2. (b) Indicate which pairs of compounds are enantiomers of one another. (c) Indicate which pairs of compounds are diastereomers of one another. (d) Indicate which compounds would have optical rotations of 0°. (e) Assign R and S configurations to all chirality centers of the compounds in part (a).arrow_forward4. Answer the following question for the molecule shown: (a)How many chirality centers does it have? Identify them. (b)How many stereoisomers of are there? (c)Draw the structure of the enantiomers. (d)Draw the structure of a diastereomers. сно ноarrow_forward(a) Identify type of molecules either chiral, achiral, or meso for each compound shown below and (b) Indicate the number of chiral centers in each molecule.arrow_forward
- Given the following structure and numbering: (a) Label the stereocenters of A as R or S and draw a Fischer Projection of the enantiomer of A with C1on top and C4 on bottom. (b) Draw a Newman Projection of a diastereomer of A looking down the C2-C3 bond with C2 in front.arrow_forwardWhich is the enantiomer of this molecule? NH2 (A) (C) B NH2 デ NH2 H- さ NH, (B) (D) H2N- Harrow_forwardDraw a Fischer projection for each of the following molecules shown in its zigzag conformation. (a) OH (b) OH (c) OH CI HO HO HO `CN HƠ CGH5 OH OH OH OHarrow_forward
- 3. Determine whether the following statements are true or false. Completely fill in the circle in front of your chosen answer. (a) A compound with a plane of symmetry must be achiral. (b) A compound with two or more stereocenters must be chiral. (a) O True O False True O Falsearrow_forwardFor each of the following pairs, indicate if they are (A) the same, (B) constitutional isomers, (C) enantiomers, or (D) diastereomersarrow_forwardIdentify the relationship in each of the following pairs. Do the drawings represent constitutional isomers or stereoisomers, or are they just different ways of drawing the same compound? If they are stereoisomers, are they enantiomers or diastereomers?arrow_forward
- Coibacin B (shown below) is a natural product that exhibits potent anti-inflammatory activity and potential activity in the treatment of leishmaniasis, a disease caused by certain parasites (Org. Lett. 2012, 14, 3878-3881): (a) Assign the configuration (R or S) of each chirality center (labeled A to C) in coibacin B. (b) Identify the number of possible stereoisomers for this compound, assuming that the geometry of the alkenes are fixed. Choices are given below and write the CAPITAL LETTER of your choice. A. 2 В. 4 С. 8 D. 16 ANSWERS: (a) A. В. C. (b)arrow_forward2. Identify the type of stereoisomerism in each of the following molecules and draw the stereoisomer pair. (a) CH;CH=CHCOH (b) CgH;CH2CH(NH2)CH3arrow_forwardIndicate how the following pairs of compounds are related.You may chooe from: enantiomers, diastereomers, constitutional isomers, or identical. ( Please why for each)arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning