1. ORGANIC CHEMISTS CONTRIBUTING TO FOOD PRODUCTION

2. The need for crop protection chemicals
Increases crop yields
Improves crop quality
Controls weeds, insects and fungal diseases
Allows land to be set aside as wilderness and woodland

3. What organic chemists did
Used the natural product strobiluran A as a starting point to synthesise a new fungicide Azoxystrobin
Azoxystrobin is the world’s largest selling agricultural fungicide
It had sales worth more than £800 million in 2011

4. The chemistry they used
Retained the 3-methoxypropenoate group found in strobilurin
Added different groups
Replaced the (Z) alkene bond by a disubstituted benzene ring

5. disubstituted benzene ring
(Z) - alkene bond
3-methoxypropenoate group