List of top Chemistry Questions on Organic Reactions asked in UP Board XII

Which of the following is obtained by Wolff Kishner reduction?

Write the products of the following reactions:
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How can these conversions be done? Give chemical equations only.
(i) Propan-2-ol from propene (ii) Benzyl alcohol from benzyl chloride (iii) Propan-1-ol from ethyl magnesium chloride (iv) 2-methyl propan-2-ol from methyl magnesium bromide (v) Picric acid from phenol

Write chemical equation for the formation of chlorobenzene by Sandmeyer reaction. How can the following compounds be obtained from chlorobenzene? Clarify giving chemical equations.
(i) Phenol
(ii) Toluene
(iii) Diphenyl

Acetic acid reacts with hydrazoic acid in the presence of conc. H$_2$SO$_4$ at 0$^\circ$C to form –

Complete the following equations:
(i) $\mathrm{CH_3CH_2CH_2OH + SOCl_2 \;\longrightarrow\; ?}$
(ii) $\mathrm{CH_3CH_2CH{=}CH_2 + HBr \;\longrightarrow\; ?}$
(iii) $\mathrm{(CH_3)_3CBr + KOH \;\longrightarrow\; ?}$
(iv) $\mathrm{CH_3CH_2Br + KCN \xrightarrow{Ethanol\ (aq.)}\; ?}$
(v) $\mathrm{CH_3CH_2Br + AgNO_2 \xrightarrow{alc.}\; ?}$

Write short notes on the following:
(i) Hunsdiecker reaction
(ii) Frankland's reaction
(iii) Dehydrohalogenation

Complete the following chemical equation: \(\mathrm{CH_3CHBrCH_3}\ \xrightarrow[\ \Delta\ ]{\mathrm{KOH(alc)}\ (A)\ \xrightarrow[\ \mathrm{ROOR}\ ]{\mathrm{HBr}}\ (B)\).}

In the reaction CH$_3$COCl + H$_2$ \xrightarrow{Pd-BaSO$_4$ .......... the product is –}

What happens when (Write chemical equation only):
(i) Silver propionate reacts with Br$_2$ in CCl$_4$:
(ii) Bromobenzene reacts with Mg in the presence of dry ether:
(iii) Methyl bromide reacts with KCN (alc.):
(iv) Ethyl bromide is heated with sodium ethoxide:
(v) Ethyl bromide reacts with silver acetate:

Write short notes on the following:
(i) Williamson's synthesis
(ii) Gattermann reaction
(iii) Kolbe's reaction

Write short notes on the following:
i) Wurtz reaction
ii) Wurtz-Fittig reaction
iii) Fittig reaction

How will you convert (Write chemical equation only):
(i) Propene into propan-2-ol (ii) Benzyl chloride into benzyl alcohol (iii) Phenol into 2,4,6-tribromophenol (iv) Phenol into picric acid (v) Salicylic acid into phenol

Complete the following equations:
(i)\; \(\mathrm{CH_3CHO} \xrightarrow{\;CH_3MgBr\;} (A) \xrightarrow{\;(B)\;} CH_3\!-\!CHOH\!-\!CH_3 \xrightarrow[\ \Delta\ ]{\;K_2Cr_2O_7/H_2SO_4\;} (C) \xrightarrow[\ \Delta\ ]{\;NH_2OH\;} (D)\)
(ii)\; \(\mathrm{C_6H_5CN + H_2O \xrightarrow{\;dil.\ H_2SO_4\;} (E)}\)

Write the names of the reagents used in the following reactions:
i) Conversion of benzyl alcohol into benzoic acid
ii) Formation of butan-2-ol from butan-2-one

Complete the following chemical equation: \(\; \mathrm{C_2H_5Br} \xrightarrow[\text{}]{\mathrm{KOH(aq)} (A) \xrightarrow[\Delta]{\mathrm{K_2Cr_2O_7,\;H_2SO_4}} (B)\).}

Write the structure of the product for the reaction:
\[ \text{C}_6\text{H}_5\text{CH}_3 \xrightarrow{\text{CrO}_2\text{Cl}_2} \text{C}_6\text{H}_5\text{CHO} \]

Write the structure of the product for the reaction:
\[ \text{C}_6\text{H}_5\text{COOH} + \text{CH}_3\text{CH}_2\text{NH}_2 \xrightarrow{\text{H}^+} \text{C}_6\text{H}_5\text{CH}_2\text{NH}_2 \]

Write the structure of the product for the reaction:
\[ \text{C}_6\text{H}_6 + \text{C}_2\text{H}_5\text{Cl} \xrightarrow{\text{Anhydrous AlCl}_3} \text{C}_6\text{H}_5\text{C}_2\text{H}_5 \]

Write the structure of the product for the reaction:
\[ \text{C}_6\text{H}_5\text{C}_2\text{H}_5 + \text{Cd} \xrightarrow{} 2\text{C}_2\text{H}_5\text{COCl} \]

Write the structure of the product for the reaction:
\[ \text{CH}_3\text{C} \equiv \text{CH} \xrightarrow{\text{Hg}^{2+}, \text{H}_2\text{SO}_4} \text{CH}_3\text{C}(\text{OH})\text{CH}_3 \]

How will you synthesize the following? Give chemical equations only.
(i) 1-phenylethanol from a suitable alkene (ii) Cyclohexylmethanol with the help of alkyl halide by \( S_N2 \) reaction. (iii) Pentan-1-ol from a suitable alkyl halide.

Explain the following reactions with suitable chemical equations:
(i) Wurtz reaction
(ii) Wurtz-Fittig reaction

Write short notes on the following: Coupling reaction: