What are the stereochemical configurations of the two diastereomers of (2S,4S)-2,4-hexanediol? Write the complete names, according to IUPAC rules, in the boxes. The answer IS case-sensitive.
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Q: What are the stereochemical configurations of the two diastereomers of (2S,4S)-2,4-hexanediol?…
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- What is the absolute stereochemistry at carbons 1,2,3, and 5 ?Draw and name all stereoisomers of 3-chlorohepta-2,4-diene using the E-Z nomenclature.1. how many stereoisomers are possible for 9,10- dibromo hexadecanoic acid? 2. Addition of bromine to palmitoleic acid primarily yields a set of enantiomers, (±) -three-9,10-dibromo hexadecanoic acid. The addition of bromine is an anti-addition to the double bond (ie, it appears to occur through the intermediary of the bromonium ion). Taking into account the stereochemistry of the cis double bond of palmitoleic acid and the stereochemistry of adding bromine, Write a three-dimensional structure for (±) -three-9,10-dibromo hexadecanoic acid!
- The LD50 (“Lethal Dose, 50 %”) is a value used in toxicology which gives the amount of a substance required to kill 50 % of a test population. It is usually reported based on body weight. For racemic carvone LD50 is reported as 1640 mg/kg. 1. Would it consider carvone to be toxic to an average person? Explain. 2. Would it be expected this the LD50 value to be the same for each enantiomer? Explain at the molecular level in stereochemical terms.Compound C undergoes a chemical reaction with a reagent, resulting in the formation of two new compounds. Four potential stereoisomers of the product are shown below. e) Name the type of reaction and provide a possible reagent. f) Clearly assign all the stereocentres found in compound D, E, F and G using Cahn-Ingold-Prelog rules. g) Define the relationship between compound D, E, F and G. h) Identify the two stereoisomers which are likely to be formed from compound C.Use the given template to draw three-dimensional line structures of (2S, 5R)-5-amino-2-hydroxylhexanal. Clearly show the three-dimensional arrangement of the substituents on the stereogenic centres.
- A difficult problem in the synthesis of PGF2α is the introduction of the OH group at C15 in the desired configuration. a. Label this stereogenic center as R or S. b. A well known synthesis of PGF2α involves reaction of A with Zn(BH4)2, a metal hydride reagent similar in reactivity to NaBH4, to form two isomeric products, B and C. Draw their structures and indicate their stereochemical relationship. c. Suggest a reagent to convert A to the single stereoisomer X.What is the absolute stereochemistry at the purple carbons?In the molecule in the image: i) indicate how many stereogenic centres there are and if the molecule is overall chiral or not ii) assign the appropriate stereodescriptors to the molecules
- What are the stereochemical configurations of the two diastereomers of (2S,4R)-2,4-hexanediol? Use the wedge/hash bond tools to indicate stereochemistry where it exists. Include H atoms at chiral centers only. If a group is achiral, do not use wedged or hashed bonds on it.A difficult problem in the synthesis of PGF2α is the introduction of the OH group at C15 in the desired configuration. a. Label this stereogenic center as R or S. b. A well-known synthesis of PGF2α involves reaction of A with Zn(BH4)2, a metal hydride reagent similar in reactivity to NaBH4, to form two isomeric products, B and C. Draw their structures and indicate their stereochemical relationship. d. Suggest a reagent to convert A to the single stereoisomer X.In what way does this steam hydrolysis affect the configuration of the chiral center in pulegone? Assign an R or S configuration to the 3-methylcyclohexanone formed in this reaction.