(a)
Interpretation: Product formed from ring closure metathesis is to be predicted.
Concept introduction: Interchange of double bonds takes places when
(b)
Interpretation: Product formed from ring closure metathesis is to be predicted.
Concept introduction: Interchange of double bonds takes places when alkenes are treated with Grubbs catalyst. The metal atom in this catalyst is ruthenium and a mixture of products is formed in this reaction. When a diene is used as starting material, ring closure takes place.
(c)
Interpretation: Product formed from ring closure metathesis is to be predicted.
Concept introduction: Interchange of double bonds takes places when alkenes are treated with Grubbs catalyst. The metal atom in this catalyst is ruthenium and a mixture of products is formed in this reaction. When a diene is used as starting material, ring closure takes place.
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