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Steps during Synthesis and Writing a Mechanism for Reaction

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I am writing a paper on an article and it shows many different compounds and I want a better understanding of where each originated and what steps were made in their synthesis. I would also like to know how to write a mechanism for this reaction.

When (4R,4S)-hydroxy-4-(4'-nitrophenyl)butan-2-one is in methylene chloride at -78 degrees celsius and diethylaminosulfur triflouride was added it yielded (4R,4S)-flouro-4-(4'-nitrophenyl)butan-2-one.

I have tried many different ways and they seem to not be working. I guess I just don't fully understand this reaction.

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Solution Summary

Provides steps that happen during synthesis and a diagram of the reaction.

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Hi there,

This is not strictly an elimination reaction - it is a fluorination reaction :)

I have attached the mechanism for you. For your interest, this sulfur reagent is known as ...

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