Synthesis

1. Safer starting materials

• Preparation and characterization of nanoparticles of copper/silver using tea leaves.

2. Using renewable resources

• Preparation of biodiesel from vegetable/ waste cooking oil.

3. Minimizing waste

• Acetylation – Acetylation of aniline/salicylic acid.
• Nitration - Preparation of 4-nitrosalicylic acid

4. Use of enzymes as catalysts

• Benzoin condensation using Thiamine Hydrochloride as a catalyst instead of cyanide.

5. Avoiding Harmful Solvents:

• Diels-Alder reaction between furan and maleic acid
• Aldol Condensation: Synthesis of dibenzal propanone
• Rearrangement: Benzil-Benzilic acid rearrangement
• Pechmann Condensation for Coumarin synthesis: Clay catalysed solid state synthesis of 7-hydroxy -4- methyl coumarin
• Nitration - Preparation of 4-nitrosalicylic acid

6. Alternative sources of energy

• Solvent free, microwave assisted ammonium formate-mediated Knoevenagel reaction
• Photoreduction of benzophenone to benzopinacol in the presence of sunlight.

7. Inorganic Preparations (Green methods)

1. Preparation of Manganese(III) acetylacetonate
2. Preparation of Iron(III) acetylacetonate

Scheme of Examination

1. The duration of examination will be 4 hrs.
2. The following exercise will be set in the examination

 Synthesis (any two)                                                 58 marks

        Viva                                                                      12 marks

                     Total                                                                         70 marks

1.Synthesis

Students will be allotted two synthesis of 29 marks each. The yield, crystallization and recording of melting point will be given due consideration while awarding marks.

2.Viva

Oral questions shall generally be asked over the work assigned to the candidate. The purpose is to find out as to what extent the candidate has understood the basic principles.