How will you bring about the following conversions in not more than two steps?

(i) Propanone to Propene

(ii) Benzoic acid to Benzaldehyde

(iii) Ethanol to 3-Hydroxybutanal

(iv) Benzene to m-Nitroacetophenone

(v) Benzaldehyde to Benzophenone

(vi) Bromobenzene to 1-Phenylethanol

(vii) Benzaldehyde to 3-Phenylpropan-1-ol

(viii) Benazaldehyde to α-Hydroxyphenylacetic acid

(ix) Benzoic acid to m- Nitrobenzyl alcohol

1. When propanone reacts with NaBH₄ it will form propan-2-ol.This alcohol is dehydrated to form propene.

2. When benzoic acid is treated with SOCl₂ it chlorinates the acid. After controlled hydrogenation it forms benzaldehyde

3. When ethanol is treated with Cu at 573 k, it will oxidize to ethanal. When ethanal is treated with Dil.NaOH it will form 3-Hydroxy butanal

4. After frieadal craft acylation of benzene it will convert into acyl benzene. And further treating with nitrating mixture it forms m-nitroaceto phenone .

5. When benzaldehyde is oxidized with dichromate and treated with calcium carbonate it forms calcium salt. And after dry di

...more

1. When propanone reacts with NaBH₄ it will form propan-2-ol.This alcohol is dehydrated to form propene.

2. When benzoic acid is treated with SOCl₂ it chlorinates the acid. After controlled hydrogenation it forms benzaldehyde

3. When ethanol is treated with Cu at 573 k, it will oxidize to ethanal. When ethanal is treated with Dil.NaOH it will form 3-Hydroxy butanal

4. After frieadal craft acylation of benzene it will convert into acyl benzene. And further treating with nitrating mixture it forms m-nitroaceto phenone .

5. When benzaldehyde is oxidized with dichromate and treated with calcium carbonate it forms calcium salt. And after dry distillation it gets converted into benzophenone.

6. When bromobenzene reacts with Mg in dry ether it forms Grignard reagent, further treating with ethanal in acidic condition it forms 1-phenyl ethanol.

7. When benzaldehyde is mixed with ethanal in presence of Dil. NaOH and then heating it in acidic condition, and after that hydrogenation it forms 3-phenylpropan-1-ol.

8. Benzaldehyde is mixed with HCN at pH 9-10, and further treating it with Water at slightly acidic condition it forms? -Hydroxyphenylacetic acid

9. When benzoic acid reacted with nitrating mixture it forms m- nitrobenzoic acid further it treated with SOCl₂ it chlorinate the acidic COOH group. And reacting with NaBH₄ further it get converted into m-nitroenzyl alcohol.

 

less

<p><strong>1.</strong> When propanone reacts with NaBH₄ it will form propan-2-ol.This alcohol is dehydrated to form propene.<img src="https://images.shiksha.com/mediadata/images/1749807778phpUFnWSQ.jpeg"0 alt="" width="706" height="63" loading="lazy"></p><p><strong>2.</strong> When benzoic acid is treated with SOCl₂ it chlorinates the acid. After controlled hydrogenation it forms benzaldehyde<img src="https://images.shiksha.com/mediadata/images/1749807627phprNmYmd.jpeg" alt="" width="486" height="121" loading="lazy"></p><div class="figure"><p><strong>3.</strong> When ethanol is treated with Cu at 573 k, it will oxidize to ethanal. When ethanal is treated with Dil.NaOH it will form 3-Hydroxy butanal</p><div class="photo-widget-full"><div class="figure"><picture><source srcset="" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1749807778phpUFnWSQ.jpeg" alt="" width="676" height="78" loading="lazy"></picture></div><div class="figure"><p><strong>4. </strong>After frieadal craft acylation of benzene it will convert into acyl benzene. And further treating with nitrating mixture it forms m-nitroaceto phenone .</p></div></div><div class="photo-widget-full"><div class="figure"><picture><source srcset="" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1749807821phpndQTOM.jpeg" alt="" width="503" height="104" loading="lazy"></picture></div><div class="figure"><p><strong>5.</strong> When benzaldehyde is oxidized with dichromate and treated with calcium carbonate it forms calcium salt. And after dry distillation it gets converted into benzophenone.</p></div></div><div class="photo-widget-full"><div class="figure"><picture><source srcset="" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1749807869phpnDV7yN.jpeg" alt="" width="724" height="70" loading="lazy"></picture></div><div class="figure"><p><strong>6.</strong> When bromobenzene reacts with Mg in dry ether it forms Grignard reagent, further treating with ethanal in acidic condition it forms 1-phenyl ethanol.</p></div></div><div class="photo-widget-full"><div class="figure"><picture><source srcset="" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1749807916phpbeh6GN.jpeg" alt="" width="588" height="82" loading="lazy"></picture></div><div class="figure"><p><strong>7.</strong> When benzaldehyde is mixed with ethanal in presence of Dil. NaOH and then heating it in acidic condition, and after that hydrogenation it forms 3-phenylpropan-1-ol.</p></div></div><div class="photo-widget-full"><div class="figure"><picture><source srcset="" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1749807778phpUFnWSQ.jpeg"0 alt="" width="526" height="93" loading="lazy"></picture></div><div class="figure"><p><strong>8.</strong> Benzaldehyde is mixed with HCN at pH 9-10, and further treating it with Water at slightly acidic condition it forms? -Hydroxyphenylacetic acid</p></div></div><div class="photo-widget-full"><div class="figure"><picture><source srcset="" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1749808018phpJAtHo5.jpeg" alt="" width="688" height="78" loading="lazy"></picture></div><div class="figure"><p><strong>9. </strong>When benzoic acid reacted with nitrating mixture it forms m- nitrobenzoic acid further it treated with SOCl₂&nbsp;it chlorinate the acidic COOH group. And reacting with NaBH₄&nbsp;further it get converted into m-nitroenzyl alcohol.</p></div></div><div class="photo-widget-full"><div class="figure"><picture><source srcset="" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1749808064phpyoY2T2.jpeg" alt="" width="421" height="107" loading="lazy"></picture></div></div><p>&nbsp;</p></div>

0 Upvotes 0 Upvotes 0 Downvotes

• • Report Abuse
• Comment