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Which of these is paired correctly to the expected regiochemistry?
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- Convert neopentane (molecule A) to 4,4-dimethylpentanal (molecle B):5-57 You know the mechanism of HBr addition to alkenes, and you know the effects of various substituent groups on aromatic substitution. Use this knowledge to predict which of the following two alkenes reacts faster with HBr. Explain your answer by drawing resonance structures of the carbo- cation intermediates. CH=CH2 .CH=CH2 and CH30 O2NDraw curved arrows and identify the thermal and photochemical products of the electrocyclic reaction of (2Z,4Z,6E)-octa-2,4,6-triene. Step 2: An electrocyclic reaction will undergo a concerted electron shift to form a cyclic ring. A new sigma bond will be formed between carbons 2 and 7. The product will be neutral. (2ZAZ,6E)-octa-2,4,6-triene Draw the curved arrows to show the mechanism. Select Draw Rings More Erase
- Questão 10A certain hydrocarbon had the molecular formula C16H26 and contained two triple bonds. Ozonolysis resulted in CH3(CH2)4CO2H and HO2CCH2CH2CO2H as the only products. What is the reasonable structure for this hydrocarbon? Hexadec-6,10-dino undec-1,5-dino Hept-1,5-dino hex-1,5-dino nahQ2- Which one of the following reaction is unreasonabl? A) NaOH(aq)+HCl(aq)-NaCla+H₂O B) H2(g)+1/202)→ H₂Op AHneutralization=-851.5kJ/mol =-283.5kJ/mol AHormation C) CH3COOH + H₂O-CH:COO(g) + H AHassociation = +213.5kJ/mol D) Mg(+2HCl → MgCha) + H₂ - AHformation =+315.5kJ/mol Q3- If A 25.0 mL of diluted bleach solution has required 30 mL of 0.30 M Na S,O; to reach the endpoint of the titration. Calculate the mass percent of NaCIO in the original sample (Molar mass NaCIO = 74.5 g/mol). Assume the density of bleach solution is 1.084g/mL and the dilution factor is 10. B) 9.96% C) 0.996% D) 12.4% A) 19.92% and the coloName the following compound: Br O (1S, 3S,4R)-1-chloro-3-bromo-4-isopropylcyclohexane O (1R, 2R, 5R)-1-bromo-2-isopropyl-5-chlorocyclohexane O (1R, 2S, 4R)-2-bromo-4-chloro-1-isopropylcyclohexane O (1S, 25, 4R)-2-bromo-4-chloro-1-isopropylcyclohexane O (15, 25, 5R)-1-bromo-2-isopropyl-5-chlorocyclohexane
- CH3 to Br- -H + Nal • product; Sy2 product of the reaction is : Аcetone H- -CH3 CH2 – CH3 CH3 CH3 CH3 CH3 it it -H H- -CH3 (d) -CH3 -H- (а) H• (Ъ) H- -CH3 -CH3 (с) H- CH -H- ČH2 – CH3 ČH2 – CH3 CH2 – CH3 CH2- CH3 2.OH OH ∞∞ BF3 Et₂O This reaction takes place via a pinacol rerrangement. Please, draw curved arrows to show the movement of electrons in this SPECIFIC step of the reaction mechanism. +BF3 HO: :OH OH (BF3OH)6-46 Show how each compound might be synthesized by the SN2 displacement of an alkyl halide. SCH,CH, (a) -CH₂OH (c) (d) CHÍNH, 6-47 (a) Give twn synthecac fox (CI) qu (b) (e) H₂C=CH-CH₂CN n OLL BU (1) H-C=C-CH₂CH₂CH₂
- Treating 1,3-butadiene with 1 mole of HBr gives a mixture of two isomeric products. Br CH2=CH-CH=CH, + H-Br - CH,— CH—CH— CH, + CH,—Сн— СН—CH, — Вr 1,3-Butadiene 3-Bromo-1-butene 1-Bromo-2-butene (a racemic mixture) Propose a mechanism that accounts for the formation of these two products.Give the complete common name, including anomer and stereochemistry labels, of the following molecules. You will find helpful information in the ALEKS Data resource. H HOCH₂ H HOCH2 ОН К HOCH₂ H ОН ОН -I H H 4 OH H H H J CH₂OH OH OH О H 0 H OH OH H OH L OH ОН L H Н H 1 H OH CH₂OH OH 0 О П О а X В 3 YDraw the mechanism using curved arrows to show how the electron pairs move for the second step of the given reaction. Include lone pairs and formal charges (if applicable) on the structures. 2m H 哎 1-04 H + H₂O: "X" + HO: + H H