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Propargylamine: spot the wrong reaction class

Single question

One-step route to propargylamine drawn as a Wittig between a phosphorus ylide and cyanamide. The atoms add up and the product is right. Read the reaction class label.

Wittig reaction scope (alkene formation from aldehydes / ketones)
Classical SN2 amination routes to primary amines
When the drawn reaction class cannot deliver the drawn bonds

Find the flaw

Click the step that contains the flaw, or pick “No flaw” if you think every step is correct.

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