Ketal

Explain: a. alpha -Halocarbonyl compounds, even the 3^(@) types like , do not undergo SN^(1) reaction. b. Which is more reactive: (i) PrCI or (ii) MeCOCH_(2)CI with NaI/acetone ? c. Acetals and ketals are regenerated back to carbonyl. compounds with H_(3)O^(o+) but not with overset(Θ)(OH) . d. Cyclohexane is more reactive than cyclopenatone with HCN.

Explain: a. alpha -Halocarbonyl compounds, even the 3^(@) types like , do not undergo SN^(1) reaction. b. Which is more reactive: (i) PrCI or (ii) MeCOCH_(2)CI with NaI/acetone ? c. Acetals and ketals are regenerated back to carbonyl. compounds with H_(3)O^(o+) but not with overset(Θ)(OH) . d. Cyclohexane is more reactive than cyclopenatone with HCN.

Which of the following is correct regarding the reaction of ketones with ethylene glycol in the presence of dry HCl? The product obtained is ethylene glycol hemi-ketal, In this reaction, electrophilicity of carbonyl carbon decreases, HCl protonates the oxygen of the carbonyl group, The product thus obtained is cyanohydrin

Fill in the blank by choosing the appropriate word/words from those given in the brackets. (acetaldehyde, formaldehyde, benzaldehyde, yellow, white, violet, Cannizzaro's, Liebermann, no alpha -hydrogen atom, 1alpha -hydrogen atom, 2alpha -hydrogen atoms, aldol, beta -hydroxy aldehyde, aldol condensation, mixed condensation, + I,-I, -M,+ M. decreases, increases, benzalchloride, PCI, SOCh. sec, alcohol, tert, alcohol, phenylhydrozone, semicarbazone, more, less, acetals, ketals, silver mirror, test, urotropine, acetaldehyde cyanohydrin, lactic acid, benzoic acid, Sodalime, ethanoic acid, propanoic acid, electrolysis, Kolbe's electrolytic reaction, carbon dioxide, water, amides, alpha, halogen, phosphorus, weaker, stronger, ethyl alcohol, dibasic,monobasic, 2,2-dimethylpropanoic acid, CH_(3)COCI , acetic acid, CH_(3)CH_(2)CH_(2)COOK , enatiomers, diastereo, K_(a) pk_(a) , methanoic acid, higher, lower.) Formaldehyde reacts with Grignard's reagent to form a primary alcohol while acetaldehyde reacts with it to form........

Fill in the blank by choosing the appropriate word/words from those given in the brackets. (acetaldehyde, formaldehyde, benzaldehyde, yellow, white, violet, Cannizzaro's, Liebermann, no alpha -hydrogen atom, 1alpha -hydrogen atom, 2alpha -hydrogen atoms, aldol, beta -hydroxy aldehyde, aldol condensation, mixed condensation, + I,-I, -M,+ M. decreases, increases, benzalchloride, PCI, SOCh. sec, alcohol, tert, alcohol, phenylhydrozone, semicarbazone, more, less, acetals, ketals, silver mirror, test, urotropine, acetaldehyde cyanohydrin, lactic acid, benzoic acid, Sodalime, ethanoic acid, propanoic acid, electrolysis, Kolbe's electrolytic reaction, carbon dioxide, water, amides, alpha, halogen, phosphorus, weaker, stronger, ethyl alcohol, dibasic,monobasic, 2,2-dimethylpropanoic acid, CH_(3)COCI , acetic acid, CH_(3)CH_(2)CH_(2)COOK , enatiomers, diastereo, K_(a) pk_(a) , methanoic acid, higher, lower.) All aldehydes and ketones react with phenylhydrazine in presence of an acid to form........

Fill in the blank by choosing the appropriate word/words from those given in the brackets. (acetaldehyde, formaldehyde, benzaldehyde, yellow, white, violet, Cannizzaro's, Liebermann, no alpha -hydrogen atom, 1alpha -hydrogen atom, 2alpha -hydrogen atoms, aldol, beta -hydroxy aldehyde, aldol condensation, mixed condensation, + I,-I, -M,+ M. decreases, increases, benzalchloride, PCI, SOCh. sec, alcohol, tert, alcohol, phenylhydrozone, semicarbazone, more, less, acetals, ketals, silver mirror, test, urotropine, acetaldehyde cyanohydrin, lactic acid, benzoic acid, Sodalime, ethanoic acid, propanoic acid, electrolysis, Kolbe's electrolytic reaction, carbon dioxide, water, amides, alpha, halogen, phosphorus, weaker, stronger, ethyl alcohol, dibasic,monobasic, 2,2-dimethylpropanoic acid, CH_(3)COCI , acetic acid, CH_(3)CH_(2)CH_(2)COOK , enatiomers, diastereo, K_(a) pk_(a) , methanoic acid, higher, lower.) For the addition reactions with HCN, NaHSO_(3) , aldehydes are....reactive than ketones.

Fill in the blank by choosing the appropriate word/words from those given in the brackets. (acetaldehyde, formaldehyde, benzaldehyde, yellow, white, violet, Cannizzaro's, Liebermann, no alpha -hydrogen atom, 1alpha -hydrogen atom, 2alpha -hydrogen atoms, aldol, beta -hydroxy aldehyde, aldol condensation, mixed condensation, + I,-I, -M,+ M. decreases, increases, benzalchloride, PCI, SOCh. sec, alcohol, tert, alcohol, phenylhydrozone, semicarbazone, more, less, acetals, ketals, silver mirror, test, urotropine, acetaldehyde cyanohydrin, lactic acid, benzoic acid, Sodalime, ethanoic acid, propanoic acid, electrolysis, Kolbe's electrolytic reaction, carbon dioxide, water, amides, alpha, halogen, phosphorus, weaker, stronger, ethyl alcohol, dibasic,monobasic, 2,2-dimethylpropanoic acid, CH_(3)COCI , acetic acid, CH_(3)CH_(2)CH_(2)COOK , enatiomers, diastereo, K_(a) pk_(a) , methanoic acid, higher, lower.) Ammonia and.......react to give hexamethylenetetramine.