Draw structural formulas for the following the compounds: (d) cis-1,3-dicyclohexylcyclopentane (e) (Z)-2-cyclohexyl-4-methylhept-2-en-3-ol (f) 3-methoxybenzaldehyde
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Draw structural formulas for the following the compounds:
(d) cis-1,3-dicyclohexylcyclopentane
(e) (Z)-2-cyclohexyl-4-methylhept-2-en-3-ol (f) 3-methoxybenzaldehyde
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- Which of the structures below is (4R)-4ethyl-2,4- dimethylcyclohexan-1-one?I have a trans-3-chloro-1-methylcyclopentane. I react it with ethanol with heat. Knowing heat favors elimination, I suspect 3-methyl-cyclopentene as a product. Will I also get the substitution product 3-methoxy-1-methylcyclopentane, a pair of enantiomers and a pair of diastereomers?The cis and trans isomers of 2,3-dimethyloxirane both react with −OH to give butane-2,3diol. One stereoisomer gives a single achiral product, and one gives two chiral enantiomers. Which epoxide gives one product and which gives two?
- 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?b. In a strongly basic solution, the starting material again converts into a molecule with the molecular formula C6H12OC6H12O. but with a completely different structure.Based on the more stable conformation (conformation A), need help providing two mechanisms for the E2 elimination of the protonated version of cis-1 using a general base (B:) to give alkenes 2 and 3. Clearly show which hydrogens meet the stereochemical requirements for E2-elimination Using Zaitsev’s rule, indicate which is favoured. Pictured is also a reaction mechanism to show what the alkenes 2 and 3 are. Thank you :)
- Q3. For the following reactions, predict the products, mechanism and name all the products obtained Catalytic hydrogenation of cycloalkenes. Reduction of cyclohexanone with Zinc amalgam (Zn/Hg alloy) in concentrated hydrochloric acid Addition of CH2I2 in an alkene in the presence of Zn-Cu 2-hexene + chlorine gas Halogenation of cyclohexane in the presence of light and catalyst Sulfonation of Cyclobutane with oleum Addition of HBr to methylcyclopropane(a) When (Z)-3-methylhex-3-ene undergoes hydroboration–oxidation, two isomericproducts are formed. Give their structures, and label each asymmetric carbon atomas (R) or (S). What is the relationship between these isomers?(b) Repeat part (a) for (E)-3-methylhex-3-ene. What is the relationship between the productsformed from (Z)-3-methylhex-3-ene and those formed from (E)-3-methylhex-3-ene?Arrange the following compounds in the increasing order of reactivity towards Conc.HNO3 & Conc.H₂SO4 1. Benzene 2. Chlorobenzene 3. phenol 4. Toluene 5. Nitrobenzene A 1.2.3.4.5 (B) 5.1,243 5.1.4.2.3 D 5.2.1.4.3
- There are a variety of isometric 1,2,3,4,5,6-hexachlorocyclohexanes, but one of them does not react with CH3CH2O- to give an elimation product. Provide the structures of this compound and briefly explain why it does not reactA chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium ethoxide(NaOCH2CH3) in ethanol. The products are two alkenes: A (cis-trans mixture) and B, a single pure isomer. Under thesame conditions, the reaction of (2S,3S)-3-bromo-2,3-diphenylpentane gives two alkenes, A (cis-trans mixture) and C.Upon catalytic hydrogenation, all three of these alkenes (A, B, and C) give 2,3-diphenylpentane. Determine the structuresof A, B, and C; give equations for their formation; and explain the stereospecificity of these reactionsWhich of the following compounds would you expect to bethe most generally reactive, and why? (Each corner in thesestructures represents a CH2 group.)
