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Chemistry : Aldehydes, Ketones and Carboxylic Acids

Short Answer Type

211. Draw structures of the following derivatives:

The ethylene ketal of hexan-3-one

199 Views

212. Draw structures of the following derivatives:

The methyl hemiacetal of formaldehyde.

204 Views

213.

Predict the product formed when cyclohexane carbaldehyde reacts with following agents:

PhMgBr and then H₃O⁺

173 Views

214.

Predict the product formed when cyclohexane carbaldehyde reacts with following agents:
Tollen ’s reagent

176 Views

215.

Predict the product formed when cyclohexane carbaldehyde reacts with following agents:

Semicarbazide and weak acid

188 Views

216.

Predict the product formed when cyclohexane carbaldehyde reacts with following agents:

Excess ethanol and acid

169 Views

217.

Predict the product formed when cyclohexane carbaldehyde reacts with following agents:

Zinc amalgam and dilute hydrochloric acid.

171 Views

Long Answer Type

218. Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither? Write the structures of the expected products of aldol condensation and Cannizzaro reaction.
(i)    Methanal
(ii)    2-Methylpentanal
(iii)    Benzaldehyde
(iv)    Benzophenone
(v)    Cyclohexanone
(vi)    1-Phenyl propanone
(vii)    Phenyl acetaldehyde
(viii) Butan-1--ol
(ix) 2, 2-Dimethyl butanal.

307 Views

Short Answer Type

219. How will you convert ethanal into the following compounds?

Butane-1, 3-diol.

310 Views

220. How will you convert ethanal into the following compounds?
But-2-enal

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