The following compound on hydrolysis in aqueous acetone will give
It mainly gives
(2005, Only One Option Correct Type)
Reaction proceed through carbocation intermediate
Match the chemical conversion in Column I with the appropriate reagents in Column II and select the correct answer using the code given below the lists.
KI in acetone, undergoes SN2 reaction with each P, Q, R and S. The rates of the reaction vary as
(2013 Adv., Only One Option Correct Type)
Acetone is an aprotic solvent and can dissolve both the nucleophile and the substrate and thus SN2 reaction is Savoured. Also
Thus, reactivity order is S > P > R > Q
The total number of alkenes possible by dehydrobromination of 3-bromo-3-cyclopentylhexane using alcoholic KOH is
(2011, Integer Type)
The substrate has three different types of B—H, therefore, first, three structural isomers of alkenes are expected as
The last two alkenes (II) and (III) are also capable of showing geometrical isomerism hence, two geometrical isomers for each of them will be counted giving a total of five isomers.
The major product of the following reaction is
(2008, Only One Option Correct Type)
PhS- is a strong nucleophile and dimethylformamide (DMF) is a highly polar aprotic solvent. The condition indicates that nucleophilic substitution (SN2) takes place at 2° benzylic place, stereochemically it involves inversion of configuration.
Aryl group exhibits neighbouring group or can show anchimeric assistance but not possible here due to deactivity imparted by -NO2 and -F. It can be if -OCH3 would have been instead of -NO2