The IUPAC name of the following compound
trans - 2- chloro - 3 - iodo - 2 - pentene
cis - 3- iodo - 4- chloro - 3- pentene
trans - 3- iodo - 4- chloro - 3- pentene
cis - 2- chloro - 3- iodo - 2- pentene
A.
trans - 2- chloro - 3 - iodo - 2 - pentene
The order of reactivity of phenyl magnesium bromide (phMgBr) with the following compounds.
III > II> I
II > I > III
I > III > II
I > II > III
D.
I > II > III
Since alkyl group has +I -effect and aryl group has +R - effect, thus, greater the number of alkyl and aryl groups attached to the carbonyl group, its reactivity towards nucleophilic addition reaction. Secondly, as the steric crowding on carbonyl group increases, the reactivity decreases accordingly.
therefore, correct reactivity order for reaction with PhMgBr is
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The reaction of C6H5CH=CHCH3 with HBr produces
C6H5CH2CH2CH2Br
A.
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What products are formed when the following compounds is treated with Br2 in the presence of FeBr3?
C.
CH3 is o/p -directing group, thus.
Which of the following is a correct electron displacement for a nucleophilic reaction to take place?
C.
Allylic and benzylic halides show high reactivity towards Sn1 reaction Further, due to greater stabilisation of allyl and benzyl carbocations intermediates by resonance, primary allylic and primary benzylic halides show higher reactivity in Sn1 reactions than other simple primary halides.
Hence, it undergoes nucleophilic reaction readily.
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Mock Test Series
