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Q: which of the following show s-trans conformation of (2Z, 4Z)-3-ethyl-2,4-hexadiene? THANK YOU!
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A: One molecule of DHA undergoes ozonolysis to obtain following products.
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Q: Q8. Draw the two possible chair-like conformations of compound 1. Using the Cahn Ingold Prelog…
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Q: draw 6 acyclic constitutional isomers of C6H12. Provide a name for each isomer, inclduing E-,Z-,R,S…
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- Define about Sigmatropic Rearrangements ?Describe Suprafacial and Antarafacial Rearrangement:DHA is a fatty acid derived from sh oil and an abundant fatty acid in vertebrate brains. Hydrogenation of DHA forms docosanoic acid [CH3(CH2)20CO2H] and ozonolysis forms CH3CH2CHO, CH2(CHO)2 (ve equivalents), and HCOCH2CH2CO2H. What is the structure of DHA if all double bonds have the Z conguration?
- A difficult problem in the synthesis of PGF2α is the introduction of the OH group at C15 in the desired conguration.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.4 Show how the compound thiodiazine~C21H26N2S2~decomposes anaerobically and how these end products in turn decompose aerobically to stabilized sulfur and nitrogen compounds.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.
- 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.1- Chloro-1,2-diphenyletane can undergo E2 elimination to give either cis- or trans-1,2-diphenylethylene (stilbene). Draw New man projections of the reactive conformations leading to both possible products, and suggest a reason why trans alkene is the major product?Write out all the isomers of the compound with molecular formula C4H10O . Select the normal/ primaryisomer and treat it with conc. H2SO4 and heat. Identify the reaction and give the product ‘A’ from it. 2. When ‘A’ is treated with HBr in the presence of a peroxide, give the name and structure of the product.
- Stereoisomers of α-bromocinnamic acid: draw the reaction mechiansim with arows for the dehydrobromination of 2,3-dibromo-3-phenylpropanoic acid with ethanol and KOH to produce (Z)-α-bromocinnamic acid and (E)-α-bromocinnamic acid. Also draw the transition state for The (Z)-isomer syn-periplanar transition state and anti-periplanar transition state of the (E)-isomer.Explain about Sigmatropic Rearrangements ?Compound X, C7H15Cl, is a chiral product of the radical chlorination of 2-methylhexane.Base-promoted E2 elimination of X gives a single product.What is the structure of X?
