Advertisements
Advertisements
प्रश्न
Predict the product of the following reaction:
उत्तर
APPEARS IN
संबंधित प्रश्न
Write the product in the following reaction:
Write the structure of the product of the following reaction:
When 0.4g of oxalic acid is dissolved in 40g 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)
Esters react with DIBAL-H to produce:
Aldehydes are produced on reduction of the following by DIBAL-H:
Aldehydes are prepared by reducing nitriles to corresponding imines with stannous chloride in the presence of hydrochloric acid. This reaction is called:
Name the electrophile produced in the reaction of benzene with benzoyl chloride in the presence of anhydrous \[\ce{AlCl3}\]. Name the reaction also.
Can Gatterman-Koch reaction be considered similar to Friedel Craft’s acylation? Discuss.
Match the example given in Column I with the name of the reaction in Column II.
| Column I (Example) |
Column II (Reaction) |
||
| (i) | \[\begin{array}{cc} \phantom{...}\ce{O}\phantom{..............................}\ce{O}\phantom{}\\ \phantom{...}||\phantom{..............................}||\phantom{}\\ \ce{CH3 - C - Cl + H2 ->[Pd - C/BasO4] CH3 - C - H} \end{array}\] |
(a) | Friedel Crafts acylation |
| (ii) |  |
(b) | HVZ reaction |
| (iii) |  |
(c) | Aldol condensation |
| (iv) | \[\begin{array}{cc} \ce{R - CH2 - COOH ->[Br/Red P] R - CH - COOH}\\ \phantom{.....................}|\\ \phantom{.......................}\ce{Br} \end{array}\] |
(d) | Cannizaro’s reaction |
| (v) | \[\ce{CH3 - CN ->[(i) SnCl2/HCl][(ii) H2O/H+] CH3CHO}\] | (e) | Rosenmund’s reductio |
| (vi) | \[\ce{2CH3CHO ->[NaOH] CH3 - CH = CHCHO}\] | (f) | Stephen’s reaction |
An alkene ‘A’ (Mol. formula \[\ce{C5H10}\]) on ozonolysis gives a mixture of two compounds ‘B’ and ‘C’. Compound ‘B’ gives positive Fehling’s test and also forms iodoform on treatment with \[\ce{I2}\] and \[\ce{NaOH}\]. Compound ‘C’ does not give Fehling’s test but forms iodoform. Identify the compounds A, B and C. Write the reaction for ozonolysis and formation of iodoform from B and C.
What is the name of the given reaction of preparation of aldehyde?
\[\ce{C3COCl ->[H2][Pd/BaSO4] CH3CHO + HCl}\]
The reaction
The number of chiral carbon in glucose is:-
When 2 – hydroxyl benzoic acid distilled with zinc dust, it give
Aldehydes are the first oxidation products of ______.
The reagent in friedel - craft reaction is:
Account for the following:
N-ethylbenzene sulphonyl amide is soluble in alkali.
Account for the following:
Reduction of nitrobenzene using Fe and HCl is preferred over Sn and HCl.
