Question

(References] Indicate whether the compounds below undergo racemization when treated with aqueous acid or base. o HEC H CH3 C CH2CH3 yes no H2C H3C H3C Submit Answer Try Another Version 1 item attempt remaining

Answer 1

To undergo necimisation, the chinal center should get converted to planes center and for this, the negetire change after the proton abstraction must be stabilized by the electron with dnewsing groups in case of acidic medium, negative change can not be genenaded but an' > elechen with anouring group should be there]. • Both mechanisms are shown below OH L (Base) Hc не (Acid) OH HY H. HT Planer foto cayat (acid) 4 chach OH (Base) chat CHCH cich ct oft A3 0 OH #P Planer et In this case, necimisation also occurs but not in the usual mannen, only acidic medium, the sen necimkation is ch possible is a the genenation of a carbocation which is also Stoule as it is a tertiary one. So all the three compounds can undergo necimisation.