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

Complete the synthesis by giving missing starting material, reagent or product. C6H5CHO ->[H2NCONHNH2] - Chemistry

Advertisements
Advertisements

प्रश्न

Complete the synthesis by giving missing starting material, reagent or product.

\[\ce{C6H5CHO ->[H2NCONHNH2]}\]

रासायनिक समीकरण/संरचनाएँ
Advertisements

उत्तर १

\[\begin{array}{cc}
\phantom{....................................}\ce{O}\\
\phantom{....................................}||\\
\ce{\underset{Benzaldehyde}{C6H5CHO} + \underset{Semicarbazide}{H2NCONHNH2} -> C6H5CH \underset{Benzaldehyde semicarbazide}{= NNHC - NH2} + H2O}\end{array}\]

shaalaa.com

उत्तर २

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 8: Aldehydes, Ketones and Carboxylic Acids - Exercises [पृष्ठ २५७]

APPEARS IN

एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
अध्याय 8 Aldehydes, Ketones and Carboxylic Acids
Exercises | Q 8.17 (iii) | पृष्ठ २५७

संबंधित प्रश्न

Arrange the following compound in increasing order of its reactivity in nucleophilic addition reactions.

Ethanal, Propanal, Propanone, Butanone.

Hint: Consider steric effect and electronic effect.


Predict the product of the following reaction:

\[\begin{array}{cc}
\phantom{..............}\ce{O}\\
\phantom{..............}||\\
\ce{R - CH = CH - CHO + NH2 - C - NH - NH2 ->[H+]}\end{array}\]


What is meant by the following term? Give an example of the reaction in the following case.

Acetal


What is meant by the following term? Give an example of the reaction in the following case.

Hemiacetal


What is meant by the following term? Give an example of the reaction in the following case.

Oxime


What is meant by the following term? Give an example of the reaction in the following case.

Ketal


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

Bromobenzene to 1-Phenylethanol


Complete the synthesis by giving missing starting material, reagent or product.


Write the main product formed when propanal reacts with the following reagents: 
2 moles of 3 CH OH in presence of dry HCl 


How will you convert benzoic acid to m-bromobenzoic acid?


Benzaldehyde can be obtained from benzal chloride. Write reactions for obtaining benzalchloride and then benzaldehyde from it.


Identify the compounds A, B and C in the following reaction.

\[\ce{CH3 - Br ->[Mg/ether] (A) ->[(i) CO][(ii) Water] (B) ->[CH3OH/H+][Δ] (C)}\]


Which one of the following gives only one monochloro derivative?


A Idol condensation will not be observed in


Paraldehyde is formed as a result of polymerisation:-


Which among the following is most reactive to give nucleophilic addition?


Draw structure of the following derivative.

The ethylene ketal of hexane-3-one


Draw structure of the following derivative.

Acetaldehydedimethylacetal


Why dissociation of HCN is suppressed by the addition of HCL?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×