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- When cis-2-decalone is dissolved in ether containing a trace of HCl, an equilibrium is established with trans-2-decalone. The latter ketone predominates in the equilibrium mixture. Propose a mechanism for this isomerization and account for the fact that the trans isomer predominates at equilibrium.Oxidation of cholesterol converts the alcohol to a ketone. Under acidic or basic oxidationconditions, the C“C double bond migrates to the more stable, conjugated position. BeforeIR and NMR spectroscopy, chemists watched the UV spectrum of the reaction mixture tofollow the oxidation. Describe how the UV spectrum of the conjugated product, cholest-4-en-3-one, differs from that of cholesterolQa 18. Bromination of 5a-cholestan-3-one occurs at C-2 or C-4 to give 2 regioisomers. Two unsaturated ketones with lambdamax = 230 nm and lambdamax = 241 nm are yielded during dehydrobromination. Use Woodward-Fieser rules to distinguish between the two.
- Predict the products of the following reactions.(a) sec-butyl isopropyl ether + concd. HBr, heatThank you for the answer, would it be possible to follow the path I have attached as well srarting from methanol ---> CH3Br -----> CH3MgBr-------> (H3C)CH-CH2OH ----> E1 IsobutaleneDevise a synthesis of the ketone hexan-3-one, CH3CH2COCH2CH2CH3, from CH3CH2Br as the only organic starting material; that is, all the carbon atoms in hexan-3-one must come from CH3CH2Br. You may use any other neededreagents.
- (45) What is the major organic product for the following reaction?4 Part 3. Give the IUPAC names of the following compoundsPart 5: Predict the products, if any, of the following reactions.name the major product for the reaction of 4-methyl-1-pentyne with the following reagents ⦁ H2/Li or Na/NH3 (liq) at -78 degrees C
- Draw the organic products formed when cyclopentene is treated with each reagent. With some reagents, no reactionoccurs.a. H2 + Pd-Cb. H2 + Lindlar catalystc. Na, NH3d. CH3CO3He. [1] CH3CO3H; [2] H2O, HO–f. [1] OsO4 + NMO; [2] NaHSO3, H2Og. KMnO4, H2O, HO–h. [1] LiAlH4; [2] H2Oi. [1] O3; [2] CH3SCH3j. (CH3)3COOH, Ti[OCH(CH3)2]4, (–)-DETk. mCPBAl. Product in (k); then [1] LiAlH4; [2] H2OProvide the reagents necessary to convert 3-methyl-2-butanol to 2-bromo-3-methylbutane. CHOOSE FROM THE FOLLOWING REAGRENTS BELOW conc. HBr NaBr, H2SO4 PBr3 HBr, peroxide Br28.1)The enol content of CH3COCH2CO2Et in hexane is 46% and that in water is 0.4%. Thereason for the above observation is as follows: (A) Intermolecular hydrogen bonding is stabilized by hexane. (B) Intramolecular hydrogen bonding is stabilized by water. (C) Intramolecular hydrogen bonding is destabilized by water. (D) CH3COCH2CO2Et dissolves in hexane completely. 2)The molecular formula of glucose is C6H12O6. The chemical composition of glucose is(A) 39.99 % C, 6.71 % H, 53.27 % O (B) 40.99 % C, 6.71 % H, 53.27 % O(C) 39.99 % C, 7.71 % H, 54.27 % O (D) 29.99 % C, 7.71 % H, 53.00 % O 3)20 mL of 0.2 M hydrochloric acid is added to 5 mL of 0.1 M sodium carbonate. Theresultant solution is then titrated against 0.2 M sodium hydroxide. What will be the titrevalue?(A) 15 mL (B) 10 mL (C) 5 mL (D) 20 mL 4) High thermal stabilities of transition metal carbonyls are due to- (A) non-availability of d-orbital on carbon. (B) formation of an ionic bond between CO and metal. (C) interaction of…