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Most unsymmetrical and symmetrical syste...

Most unsymmetrical and symmetrical systems are respectively

A

ortho rhombic and cubic

B

tetragonal and cubic

C

triclinic and cubic

D

rhombohedral and ortho rhombic

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Williamson's synthesis is a convenient method used to prepare both symmetrical and unsymmetrical ethers. What are the starting materials required to prepare anisole by Williamson's synthesis?

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Knowledge Check

  • The most unsymmetrical and symmetrical system are respectively:

    A
    Tetragonal, Cubic
    B
    Triclinic, Cubic
    C
    Rhombohedral, Hexagonal
    D
    Orthorhomic, Cubic

  • An important route to unsymmetrical ethers is a nucleophilic substitution reaction known as the Williamson synthesis. This synthesis consists of an S_(N)2 reaction of a sodium alkoxide with an alkyl halide, alkyl sulphonate or alkyl sulphate. By a proper choice of reagents, both symmetrical and unsymmetrical ethers can be prepared by Williamson synthesis. The reverse process of cleavage of ethers to give back the original alkyl halide and the alcohol can be carried out by heating the ether with HI at 373 K. Which of the following ethers cannot be prepared by Williamson synthesis?

    A
    Methoxybenzene
    B
    Benzyl p-nitrophenyl ether
    C
    tert-Butyl methyl ether
    D
    Di-ether-butyl ether

  • An important route to unsymmetrical ethers is a nucleophilic substitution reaction known as the Williamson synthesis. This synthesis consists of an S_(N)2 reaction of a sodium alkoxide with an alkyl halide, alkyl sulphonate or alkyl sulphate. By a proper choice of reagents, both symmetrical and unsymmetrical ethers can be prepared by Williamson synthesis. The reverse process of cleavage of ethers to give back the original alkyl halide and the alcohol can be carried out by heating the ether with HI at 373 K. Benzyl ethyl ether reacts with HI to form

    A
    p-iodotoulene and ethyl alcohol
    B
    benzyl alcohol and ethyl iodide
    C
    phenol and ethyl iodide
    D
    iodobenzene and ethyl alcohol

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    Williamson's synthesis is a convenient method used to prepare both symmetrical and unsymmetrical ethers. Write the IUPAC names of (1) anisole (2) CH_3-O-CH(CH_3)_2

    An important route to unsymmetrical ethers is a nucleophilic substitution reaction known as the Williamson synthesis. This synthesis consists of an S_(N)2 reaction of a sodium alkoxide with an alkyl halide, alkyl sulphonate or alkyl sulphate. By a proper choice of reagents, both symmetrical and unsymmetrical ethers can be prepared by Williamson synthesis. The reverse process of cleavage of ethers to give back the original alkyl halide and the alcohol can be carried out by heating the ether with HI at 373 K. Which of the following reagents when heated will give a good yield of ether?

    Let R be a relation on the set of integers given by aRb hArr a=2^(k)*b for some integer k. Then R is : a)An equivalence relation b)reflexive but not symmetric c)reflexive and transitive but not symmetric d)reflexive and symmetric but not transitive

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