Predict the stability from most to least stable and explain why. SN2 Readious (a) Br Draw the transition states when reacted with silver Br (b) Nitrate in ethanol. Br (c) SNI Reactious Br (a) Br (b) Draw the transition states when reacted with Nal in Acetone.
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- Predict the products of each of the following reactions. (a) MnCO3(s) + HI(aq) ⟶(b) CoO(s) + O2(g) ⟶(c) La(s) + O2(g) ⟶(d) V(s) + VCl4(s) ⟶(e) Co(s) + xsF2(g) ⟶(f) CrO3(s) + CsOH(aq) ⟶(b) Arrange the following in decreasing order of bond length and bond angle with explanation C2H6, C2H4, C2H21. (a) Draw the structures of A to E in the following reactions. (i) OH 1. LIAIH4 РСС A B 2. H2О H2 Lindlar's catalyst (ii) (CH3)3COOH HO, Ti[OCH(CH3)2]4 (+)-DET (iv) 1. RCO3H E 2. Hао
- Determine product (A) of the reaction (1) NK + DMF CH2 – Br (A) (81%) (2) HO¯/H2O (Benzyl bromide) (a) Ph – NH2 (c) Ph – CH2 – NH – CO,H (b) Ph – CH2 – NH2 (d) Ph – CH, - NH – CHO4. Protonation of alcohol A and subsequent loss of water, produces the intermediate B. CH3 CH; CH, CH, — с — сH, CH, CH;CH, - C- CH, CH; | OH A B (a) (i) Name alcohol A. (11) What type of species is intermediate B? (iii) Draw the structures of the two alkenes which can be formed from species B by removal of a proton. Label as C the alkene which shows geometrical isomerism. (b) The intermediate B is readily attacked by nucleophiles such as water. What is the essential feature of a nucleophile? (c) State what final colour you would see if alcohol A were warmed with acidified potassium dichromate(VI). Explain your answer. Colour Explanation . (ii) Draw two structural isomers of alcohol A which form branched chain ketones when heated with acidified potassium dichromate(VI), but which could not form alkene C on dehydration.Prediga los productos de las siguientes reacciones. (a) éter sec-butil isopropflico + HBr conc., calor (c) éter di-n-butflico + NaOH conc. caliente (e) etoxibence no + HI conc., calor (b) 2-etoxi-2-metilpentano + HBr conc., calor (d) éter di-n-butllico + Na metálico (1,2-epoxihexano+H*,CH,OH
- A tautometric keto (A) – enol(B) equilibrium may be formulated as follows (A) (B) CH3 – COH ß-----------àCH2 – CHOH Given the following bond energies: C – H = 435kJ mol-1 C – C = 368 C==C = 610 C – O = 357 kJmol-1 C==O = 748 kJmol-1 O – H = 462 kJ mol-1 Calculate the enthalpy change in going from Keto form (A) to the enol form (B)Preparation of a N-heterocyclic carbene complex of copper(I) chloride Theory For the reaction sequence shown below identify the products A and B. + (AUCI(SMe,)| - SME, R- 'R Cu CI B.(a) (b) HO N N-H Catalytic H+ (-H₂O) ? (c) NH2 HO N (d)
- Which best represents the major organic product(s) of the reaction shown? (A) (C) O O A O 'Br OH + OH OH (B) (D) xs. HBr OH Br + Br BrTrans-amminecarbonyl-bis(ethylenediamine)iron(III) cation is optically active (i.e. has a non-superimposable mirror image). Select one: O True O FalseWhat are the major products of the reaction below? B (A) J + En is CI (B) abo + En (C) + En is. (D) + En