3. Please distinguish the following compounds 1-chlorobutene ; 3-chlorobutene , 4-chlorobutene and 1- bromobutane CICH=CHCH2CH3 CH-CHCHCICН3 CH2= CHCH,CH,Cl CH;CH2CH,CH,Br
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A: The name of compounds is given as follows:
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- How many possible monoborminated products including stereoisomers would you expect for the reaction of 2,3-dimethylpentane with Br2 in the presence of light? (4,6,5,7)?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.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?
- Draw and name all stereoisomers of 3-chlorohepta-2,4-diene using the E-Z nomenclature.The trans diaxial geometry for the E2 elimination in chlorocyclohexane. Define this ?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.Dehydrohalogenation of 1-chloro-1-methylcyclopropane affords two alkenes (A and B) as products. Explain why A is the major product despite the fact that it contains the less substituted double bond.Stretch the structure for (S)-3-bromo-2-methylpentane and add the stereochemistry at all stereogenic centers.
- Show that the (S,S) enantiomer of this (R,R) diastereomer of 1-bromo-1,2-diphenylpropane also undergoes E2 elimination to give the cis diastereomer of the product. (We donot expect these achiral reagents to distinguish between enantiomers.)Rank the following groups in order of decreasing priority. −F, −NH2, −CH3, −OHGive the reagents and observations to distinguish between the following pairs of compounds CH3CH = Ch2 and CH3C≡CH CH3CHO and CH3COCH3 CH3CH2NH2 and CH3CONH2