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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Can Gatterman-Koch reaction be considered similar to Friedel Craft’s acylation? Discuss. - Chemistry

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प्रश्न

Can Gatterman-Koch reaction be considered similar to Friedel Craft’s acylation? Discuss.

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उत्तर

Gattermann-Koch reaction is formylation (introduction of-CHO group) to the benzene nucleus. Friedel-Crafts acylation reaction is introduction of RCO-group in the benzene ring.

In Friedel-Crafts acylation reactions, the benzene is treated with an acid chloride in presence of anhydrous \[\ce{AlCl3}\]. So, Gattermann-Koch reaction can be considered similar to Friedel-Crafts acylation reaction.

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पाठ 12: Aldehydes, Ketones and Carboxylic Acids - Multiple Choice Questions (Type - I) [पृष्ठ १७३]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
पाठ 12 Aldehydes, Ketones and Carboxylic Acids
Multiple Choice Questions (Type - I) | Q 37 | पृष्ठ १७३

संबंधित प्रश्‍न

Write the product in the following reaction


Predict the product of the following reaction:


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p-Nitrobenzaldehyde


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When 0.4 g of acetic acid is dissolved in 40 g of benzene, the freezing point of the solution is lowered by 0.45 K. Calculate the degree of association of acetic acid. Acetic acid forms dimer when dissolved in benzene.
(Kf for benzene = 5.12 K kg mol−1, at. wt. C = 12, H = 1, O = 16)


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Aldehydes are prepared by reducing nitriles to corresponding imines with stannous chloride in the presence of hydrochloric acid. This reaction is called:


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The reaction 


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The reagent in friedel - craft reaction is:


The intermediate compound ‘X’ in the following chemical reaction is:


The oxidation of toluene to benzaldehyde by chromyl chloride is called ______.


Reagent used to convert allyl alcohol to acrolein is ______.


An organic compound with molecular formula \[\ce{C7H7NO2}\] exists in three isomeric forms, the isomer ‘A’ has the highest melting point of the three. ‘A’ on reduction gives compound ‘B’ with molecular formula \[\ce{C7H9N}\]. ‘B’ on treatment with \[\ce{NaNO2/HCl}\] at 0-5° C to form compound ‘C’. On treating C with \[\ce{H3PO2}\], it gets converted to D with formula \[\ce{C7H8}\], which on further reaction with \[\ce{CrO2Cl2}\] followed by hydrolysis forms ‘E’ \[\ce{C7H6O}\]. Write the structure of compounds A to E. Write the chemical equations involved.


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