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Stronger bases

Cumulenic anions, C=C=C and C=C=C=C, without strongly electron-withdrawing substituents are much stronger bases than acetylides, "CsC- and are therefore also stronger nucleophiles. In view of the poor stability of the cumulenic anions at normal temperatures this is a fortunate circumstance the usual functionalization reactions such as alkylation, trimethylsilylation and carboxylation in most cases proceed at a sufficient rate at low temperatures, provided that the... [Pg.27]

The stronger base is derived from the weaker conjugate acid Therefore add a proton to ammonia to give its conjugate acid (ammonium ion) and a proton to pyridine to give its conjugate acid (pyridimum ion) then look up the values for each... [Pg.38]

Ammonium ion is a weaker acid than pyridimum ion therefore ammonia is a stronger base than pyridine... [Pg.38]

Which IS the stronger base in each of the following pairs Note This information will prove useful when you get to Chapter 9)... [Pg.38]

The conjugate acid of CH3CH20 is stronger than the conjugate acid of H2N Therefore H2N is a stronger base than CH3CH20 /... [Pg.38]

Example A common misconception is that the conjugate base of a weak acid is strong This is sometimes but not always true It is true for example for ammo nia which is a very weak acid (pK 36) Its conjugate base amide ion (H2N ) is a much stronger base than HO It is not true however for acetic acid both acetic acid and its conjugate base acetate ion are weak The conjugate base of a weak acid will be strong only when the acid is a weaker acid than water... [Pg.44]

Amide ion is a much stronger base than acetylide ion and converts acetylene to its conjugate base quantitatively... [Pg.370]

Conjugate base of ethyl 3 oxobutanoate (stronger base)... [Pg.889]

Alkylammes are slightly stronger bases than ammonia... [Pg.919]

The compound shown is a somewhat stronger base than ammonia Which nitrogen do you think IS protonated when it is treated with an acid" Write a structural formula for the species that results... [Pg.970]

H2S IS a stronger acid than H2O HO is a stronger base than HS (b) (CH3)3N is a stronger base than (CH3)20 1 27 Each oxygen has two thirds of a negative charge (—0 67)... [Pg.1201]

Tetrahydroisoqumoline is a stronger base than tetrahydroquinohne The unshared electron pair of tetrahydroquinohne is delocalized into the aromatic nng and this substance resembles am line m its basicity whereas tetrahydroisoqumoline resembles an alkylamine... [Pg.1244]

Since bicarbonate is a stronger base than it is an acid (fcb2 > we expect that aqueous solutions of HCO3- will be basic. [Pg.142]

See other pages where Stronger bases is mentioned: [Pg.28]    [Pg.87]    [Pg.89]    [Pg.118]    [Pg.130]    [Pg.226]    [Pg.40]    [Pg.43]    [Pg.43]    [Pg.50]    [Pg.55]    [Pg.338]    [Pg.370]    [Pg.370]    [Pg.594]    [Pg.594]    [Pg.594]    [Pg.649]    [Pg.799]    [Pg.856]    [Pg.866]    [Pg.888]    [Pg.894]    [Pg.897]    [Pg.903]    [Pg.921]    [Pg.955]    [Pg.997]    [Pg.997]    [Pg.998]    [Pg.1007]    [Pg.1214]    [Pg.1214]    [Pg.1214]    [Pg.296]    [Pg.2]    [Pg.404]   
See also in sourсe #XX -- [ Pg.2 , Pg.2 , Pg.2 ]



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Ammonia or Trimethylamine. Which is the Stronger Base

SOME ACIDS AND BASES ARE STRONGER THAN OTHERS

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