and gives positive iodoform test. A does not reduce Fehling solution. Identify A. .
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone. . How are the following conversions effected (a) propanal into butanone (b) Hex- -yne into hexan- -one. (c) phenylmethanal into benzoic acid (d) phenylmethanal into benzoin .
Complete the following reaction. HO-CH -CH -CH -OH CH -CH -CH -C-CH ? dry HCl . Identify A, B and C Benzyl bromide A NaCN THF H O + (B) i) CO ii) H O + Mg ether XII U12-Carbonyl XII U12-Carbonyl - - - - .
Oxidation of ketones involves carbon – carbon bond cleavage. Name the product (s) is / are formed on oxidising , – dimethyhexan – - one using strong oxidising agent. . How will you prepare i.
Acetic anhydride from acetic acid ii. Ethylacetate from methylacetate iii. Acetamide from methylcyanide iv. Lactic acid from ethanal v.
Acetophenone from acetylchloride vi. Ethane from sodium acetate vii. Benzoic acid from toluene viii. Malachitegreen from benzaldehyde ix.
Cinnamic acid from benzaldehyde x. Acetaldehyde from ethyne XII U12-Carbonyl XII U12-Carbonyl - - - - Alkenes Ozonolysis Alkynes dil.H SO HgSO4 Gemdihalides Hydrolysis Alcohols Cu R - OH PCC H / K Cr O (RCOO) Ca Dry distillation Alkyl cyanide (i) Grignard reagent (ii) H O + RCOCl H /Pd/BaSO (Rosenmund's reduction) R - C (i) SnCl /HCl (ii) Hydrolysis (Stephen's reaction) Methods of preparation Chemical properties HCN R R CN (Cyanohydrin) NaHSO R R SO Na R R N - Z H N-Z (Ammonia derivatives) Ester (Given by all aldehydes) Tischenko reaction - H containing carbonyl compounds give Aldol reaction Aldehydes without - H give cannizaro reaction (Clemmensen's reduction) Zn-Hg Conc.HCl Alkane LiAlH (H) Alcohol Oxidation Acids i) RMgX Alcohols NH - NH OH / Alkane (Wolf Kishner reduction) Al(OEt) 573K R - OH (O) ii) H O +