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Addition of HX to conjugated alkenes occurs via two modes:
- Direct addition (1,2 addition): HX adds directly across the ends of a C=C bond.
- Conjugate addition (1,4 addition): HX adds across the ends of conjugated system.
The distribution of the products depends on the reaction conditions (temperature).
At low temperature, the reaction is under Kinetic control (rate, irreversible conditions) and the major product is that from fastest reaction, that of the bromide with the secondary cation.
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- Please help with 4c, 4d, and 4e. We havent learned kaw of equivalents so please do 4c a different way. thank youPredict the product for the following reaction. H₂C A I and II HH3C xoxoxox B D IV E cis-1-bromo-3-methylcyclohexane ||| SH H₂C NASH III acetone Br H3C ||||SH IV HCompound C is? Compound C-DEPT 135 90 H3C I 70 CH3 CH 4 I 8 (ppm) CI CH₂CH₂CH-Cl CH₂ CH3 CH3-C-CH3 I Cl 1 I 30 10 CH3CH₂CH₂CH₂-Cl
- Give the major organic product(s) of the following reactions. If none is predicted, choose "N.R." CH3 H₂C H3C H₂C A HNO3 H₂SO4 -NO₂ -NO₂ H3C- O₂N- B -NO₂ -SO₂H H₂CC O₂N- O=CCH3 с OCH 3 SO₂HQ4 * 1,3-thiazolo[4,5,b]pyrdine 1,5-thiazolo[4,5,b]pyrdine 1,3-thiazol[4,5,c]pyridzine 6-thiabicyclo[4.5]decane 1-thia[5.6]decane Both are wrong Q5* ΟΟΟ Q6 * 2H-1,3-oxazete 4H-1,3-oxazete 2H-1,3-oxazane 4H-1,3-oxazaneBr LiCu(CH3)2 6 (1) LiAlH4 2 3 Ahol follow (2) H₂O 0 Aci HBr (xs) H (2) H₂O+ -Li
- 6. The product(s) of the following reaction dd blow di CH2-CH2 excess HBr is/are: CH2 CH2 heat Od Al () (A od Ocf D (CHPPCOK (CHPCON G)D CH;CH2OCH,CH3 HO CH;CH,CH,CH,OH and CH;CH,CH2CH,Br II H t mol boumol toubong soinm od o CH2-CHBR HO CH2 CH2 BrCH-CH,CH-Cн,ОН and BrCH,CH,CH-CH,Br CityCHCH COM III IV A) I B) П O II D) IV E) None of these HO CH CH'OHGiven the following table of bond dissociation energies (in kcal/mol), what is AH° for this reaction? (CH3);С —Н + Br -Br (CH);С — Br + Н—Br | CH3-H 105 (CH3)3C-H 91 CH3-Br 70 (CH3)3C-Br 65 Br-Br 46 H-Br 88 O +7 kcal/mol O -7 kcal/mol O +16 kcal/mol O -16 kcal/mol O cannot be determined with this informationIn some circumstances, dehydrogenation is observed. Dshydrogenation imvalves the lass of two hydrogen atoms (the reverse of hydrogenation). Analyze cach of the follawing dehydrogenation reactions and then use the information in the figure given below to predict whether sach transformation will be downhill in energy (negative value for AH) or uphill in energy (positivevalue for AH). + 3H2 Еxpected 152 klimol 2H2 + 3H: Actual Energy + Hạ Expected -360 kimol Observed -208 kimol -232 kmol -120 kimol + H2 The dehydrogenation reaction is in energy. uphill downihll + 2 H2 The dehydroganation reaction is in energy. + H2 The dehydrogenation reaction is in energy
- Q2- 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 colo2 Write the IUPAC name for each compound. Ο COC-M (a) HV Ο 0 || (d) H₂N- C (b) CH₂(CH₂),COCH, OTT HO noitos2) alodo d diw sobirbydaA to noilo ono evig of alcools dikw 39891 abitbydA (8.81 (c) CH₂(CH₂)4CNHCH, no bae totes me to slom 0 O CNH₂ با нио но но но HOOH + HOOO HO HOOOH OHO.HOOD HO || (e) CH₂CO-A iw sobixbydnA to noltoso. driw do A (D681 moitoo@) aoniMA "I w bn shomme a onions to solomeowths of elom ono bas shima Joubo aviy oj vig OH OHO bertiup bios biydisororesidenten (f) CH3CHCH₂COCH₂CH3PPh3, DIAD CH20H (A) THF mitsunobu H2N sreaction NH2 excess AGOH () (Ci3H20 INS) me I N-me me