SELECT * FROM question_mgmt as q WHERE id=1703 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=9 AND chapterId=67 and ex_no='2' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 12th chemistry Aldehydes Ketones and Carboxylic Acids how will you convert ethanal into the following co

Question:

How will you convert ethanal into the following compounds?

(i) Butane-1, 3-diol  (ii) But-2-enal  (iii) But-2-enoic acid

Answer:

 

(i) On treatment with dilute alkali, ethanal produces 3-hydroxybutanal gives butane-1, 3-diol on reduction.

 

(ii) On treatment with dilute alkali, ethanal gives 3-hydroxybutanal which on heating produces but-2-enal.

 

(iii) When treated with Tollen's reagent, But-2-enal produced in the above reaction produces but-2-enoic acid .


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