Question

Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a - i for your answers.

Methanol to + + NaOCH3 NOCH Mothands t º + HOCH • NAGI HOCHZ + NaCl OH NaHCO3 o + H2O + CO2 + Nal a = Proton transfer b = Lewis acid base c = Radical chain substitution d=Radical chain addition e = Electrophilic addition f=E1 Elimination g=E2 Elimination h=Syl Nucleophilic substitution i= Sy2 Nucleophilic substitution Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a - i for your answers. Submit Answer Retry Entire Group 6 more group attempts remaining

Answer 1

dat. NaOCH3 Methongly a Methanol, the Na cess 4 + CH3OH + Nael Stable testing Carbocation This reaction proceed by El mechanism. As that the goren alkyl holide form stable tertiary action and then in the presence of strong bene the following a product to by elimination reation i.e. El uct ormed LOH NaHCO3 In the first step the carboseptic acid in presence of bene Natteo undergo rapid deprotomation to tom carboxy ion and the akene in presence of in form iodonium lon. Then the carboxylate in altalk the Todonium ion (at more hindered side preferentially) by SN2 reaction mechanism i e. by back & side atach to the iodontuomion to form product. So the reaction to follow SN2 mechmism.

Zlatken DMF & HON+ Kel Here in the polaraprotic DMF solvent the alkyl holide cannot undergo protone form carbocation due to lack of stabilisation. so the giren EN act in a very good nucleophile in DMF medium which readily takes a proton to form the following alkene and leaving er by E2 reaction. ANHA Det lanning 3N2D + CY - NHA Here the giren nucleophile attack by 3-end to the compound A a from back side and er- lears 30, the mechanism is SN2. Here SN2 occures so readily due to the allylic stabilisation. ph NOOH Ph Cl3 Hoel - 00 lei S12 # 2 CHH Here the given akhol in presence of NaOH undergo to rapid de protonation to form alkoxide ion which them tok libe c-el bond from hackside and er leaves so the reation occused by 3N2 mechanism.

OH+H-Bry ri Oto Bo . are the giren alehel ready takes a proton from the H-Br and foom Holle so, the alchol acts as acid and H. Br also low a proton to form Br. So, the resetion secure' by proton transfer mechanism.