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Simun Mishra posted an Question

July 23, 2020 • 01:06 am

30 points

IIT JAM
Chemistry (CY)

How many darzens reaction are their ?

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Dinesh khalmaniya 1 Best Answer

both are correct but 2nd one have little bit different . it is darzon halogenation
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Darzens halogenation is the chemical synthesis of alkyl halides from alcohols via the treatment upon reflux of a large excess of thionyl chloride or thionyl bromide (SOX2) in the presence of a small amount of a nitrogen base, such as a tertiary amine or pyridine or its corresponding hydrochloride or hydrobromide salt.
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got it??
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sir first one is darzen Condensation and second one is darzen halogination ...?
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yes yes
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correct
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ok sir tq sir 😁
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sir can u pls check my previous question
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Priyanshu kumar

The second reaction is SNi reaction examples...substitution reaction involving thionyl chloride...Darzens condensation is 1st one
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2nd one is mainly darzens halogenation process
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got simun??
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i think now you differentiate both these
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please mark the answer simun if you got it🙏😊
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Suman Kumar

2nd one is not a darzen reaction. Ist one is a darzen reaction
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but it is also a Darzen reaction given in the book
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2nd one is darzen halogenation
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https://www.google.com/url?sa=t&source=web&rct=j&url=https://en.m.wikipedia.org/wiki/Darzens_halogenation%23:~:text%3DDarzens%2520halogenation%2520is%2520the%2520chemical,corresponding%2520hydrochloride%2520or%2520hydrobromide%2520salt.&ved=2ahUKEwjet6-6hOHqAhUQX30KHaeWBw8QFjABegQIDRAG&usg=AOvVaw2ERKO4yB5sMRMRgdqhGFD5
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See this
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But when we say Darzen reaction then it is referred to ist one
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Remember this.
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Any Problem Simun
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Simun did you get?
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yes sir I got it
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