Question

(a) why
Flurine can not be used in the preparation
of vicinal difluride from alkene.​

Answer 1

Answer:

Fluorination-based difunctionalization is a useful approach for the synthesis of organofluorides. With these methods, not only fluorine but also an additional functional group can be introduced into the organic molecules in one step reaction. Subsequently, the second functionality can be employed as a handle for additional transformations of the organofluorine compounds. This fluorination-based difunctionalization of alkenes provides an efficient way to alkyl fluorides, whereas the same reaction of alkynes, in most cases, affords the alkenyl fluorides, but in some cases, especially under the catalysis of gold, the alkyl fluorides are generated.

Tremendous progress has been made in fluorination-based difunctionalization of alkenes and alkynes with different fluorinating reagents, and thus the vast array of alkyl fluorides are accessible today.

Explanation:

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Answer 2

Answer:

Fluorination-based difunctionalization is a useful approach for the synthesis of organofluorides. With these methods, not only fluorine but also an additional functional group can be introduced into the organic molecules in one step reaction. Subsequently, the second functionality can be employed as a handle for additional transformations of the organofluorine compounds. This fluorination-based difunctionalization of alkenes provides an efficient way to alkyl fluorides, whereas the same reaction of alkynes, in most cases, affords the alkenyl fluorides, but in some cases, especially under the catalysis of gold, the alkyl fluorides are generated.