Question

3. ईन तथा पॉलीईन के ... के निर्धारण के लिए वुडवर्ड-फाइजर नियम कैसे प्रयोग किया जाता है, उदाहरण दीजिए। How Woodward and Fieser rule is used for the determination of 2 of ene and polyene. Give examples.​

Answer 1

Explanation:

Woodward's rules, named after Robert Burns Woodward and also known as Woodward–Fieser rules (for Louis Fieser) are several sets of empirically derived rules which attempt to predict the wavelength of the absorption maximum (λmax) in an ultraviolet–visible spectrum of a given compound. Inputs used in the calculation are the type of chromophores present, the auxochromes (substituents on the chromophores, and solvent.[1][2] Examples are conjugated carbonyl compounds,[3][4][5] conjugated dienes,[3][6] and polyenes.[3][5