Question

Which alkene undergoes acid-catalyzed hydrolysis to gives a racemate? H3CH O b) o I and II 011 O None

Answer 1

Solution Recemic mixture : A racemic mixture is 50:50 mix of two enemtiomers (one is 'R' Conformation and another is-si conformation) Acid Catalyzed hydrolysis Compound 6 N H 40/X+, rond de H2o/Å 2 nidis (4- Coolocation ) (Major Pdt). (st denoted Chinal center} It hos Rotso Conte They one tero Conformation - HO OHO H O' H4 s. Conformation R- Conformation They one turo enemtiomers and give necemic mixtine (50:50) I 50% s conformation & 50% R- Conformation ) CH3 Compound - CH33 H4 ( R- Conformation H20/n* is 4 t tia La) o [e-Combocation) eit OH 11 + 11 (* denoted Chinal center) They are toro Conformation - CH3 HH OH CH3 OH H Conformation Conformation

They one of two diastereomer; do not give necemic mixtene. Hene, The Compaund- ( n) give rol necemic mixtine after acid - Catalyzed uydrolysis. [Rule : 12 3 Clockwise; 4- Back positive: ® - Conformation ar vice-versa. T Rule; 123 anticlock wise, 4-back positive. - Conformation: a vice-versa
first compound (1) give recemic mixture.