BSc III OC_Quiz3

The organometallic reagents among the following are

A) Lithium divinyl cuprate,

B) Lithium diisopropylamide,

C) potassium tert-butoxide,

D) isopropyl magnesium iodide

• A and B

• B and D

• C and D

• A and D

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The correct reagent for this conversion is

• (i) Et₃B, O₂, THF, (ii) H₂O

• (i) EtMgBr, Et₂O, (ii) H₂O

• (i) Et₂CuLi, Me₃SiCl, (ii) H₂O

• ⁿBuLi, THF, EtI

The final product in the given reaction is

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The product in the given reaction is

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The correct sequence of reactions for the synthesis of the following molecule is

• (i) 4-iodophenol, Mg, ether

  (ii) Cyclopropane carboxaldehyde, THF (iii) CsCO₃, MeI, THF

• (i) Cyclopropyl bromide, Mg, ether

  (ii) 4-hydroxy benzaldehyde, THF

  (iii) CsCO₃, MeI, THF

• (i) 4-iodophenol, CsCO₃, MeI, THF

  (ii) Mg, ether

  (iii) Cyclopropane carboxaldehyde, THF

• (i) Cyclopropyl bromide, Mg, ether (ii) Methyl-4-methoxybenzoate, THF

The major product formed in the reaction of butane nitrile with phenyl magnesium bromide followed by acidification is

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The product is

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The product is

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The product is

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