a) Draw in the curved arrows for the formation of this Wittig reagent: HH : Br: Li Step 1 HH Ph3P HH H3C Ph- CH3 Ph Ph b

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A Draw In The Curved Arrows For The Formation Of This Wittig Reagent Hh Br Li Step 1 Hh Ph3p Hh H3c Ph Ch3 Ph Ph B 1 (74.08 KiB) Viewed 25 times

a) Draw in the curved arrows for the formation of this Wittig reagent: HH : Br: Li Step 1 HH Ph3P HH H3C Ph- CH3 Ph Ph b) Step 1 of the above mechanism is what type of reaction? SN1 SN2 El E2 Reversible Acid/Base c) Step 2 of the above mechanism is what type of reaction? SN1 SN2 El E2 Reversible Acid/Base d) What would happen if you used sodium hydroxide instead of n-butyllithium in Step 2? e) What would happen if you used t-butylbromide instead of bromoethane in Step 1? f) Draw the other resonance form of the Wittig reagent. This resonance form has an expanded octet on the phosphorus atom. Step 2 Ph Ph H H Ph HH CH3 + Li : Br: Irreversible Acid/Base Irreversible Acid/Base