Question

4.1.3 X 10', n = 5:4.3. 4.2. Suggest reasonable mechanisms for each of the following reactions. The materials are racemic, unless otherwise stated. ctions. The starting PHCHCI + PLOCH)3 = PhCH P(OC Hs)2 + CHCI CH CH. CH O H BSCI CH, CH₂ CH₂ CH CH but Bsci "OH pyridine CH Bso pyridine Bso HCBCCH CHỊCHCI - HẠC CCHỊCH,CHẠOCF O NaNO,H,O HCIO CH=o bự (CH4)ẠCAM-OH NaNO2, H2O NH, HCIO (CH) CH CHE (Ac), CHON H, heat but but OH (Ac), HO N CH,CO, T H", heat he 0.CCHE non-racemic racemic non-racemic nararamdaman

Answer 1

1 Ph-CH2Cl 4PCOEN) Phochz-8- 02H3 betat CHIC Mechnism: to pro Ets Ph-Chi-po-cha O-CH3 +cio ci Snaron Ph-CH2- PLOCH3 < ScH3 CHO CHS Phaeth. P o-cha ocho -teloc -OBS CH3 TOH BSCI CHOCHO PY Cheki CH3 o Brog cho OBS BO Here Trans bond act as neighbowing group and neighbowing group participaron occur and ® is the find product. ells CHB SCH BSC CHS CK I Cho CBs OBS a Xch ON Here bond is trans to I ons the obs group and undergoes in Neighbouring group particiation I to give the product 6. obs. ③

> Hesc-CMC Prot HC=c-CH2-CH2-CH2 - A-=-c-ct A-=-c-CHI-CHICH V top Hel Hq - ch-ch Hee-CH2 CH2 - CH2 . dace F3 H2C=C- CH2 - CH2 - CH2-02 CCF3 NaN027 not Helly tot NaNR H2O NH HClot ] Miclag

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