An unknown alkene 'A' is subjected to complete reductive ozonolysis ( followed by ) and yields exactly two moles of an aldehyde having a molar mass of 44 g/mol as the sole organic product. What is the

Question

An unknown alkene 'A' is subjected to complete reductive ozonolysis ($O_3$ followed by $Zn/H_2O$) and yields exactly two moles of an aldehyde having a molar mass of 44 g/mol as the sole organic product. What is the IUPAC name of alkene 'A'?

Prashant Kotian · Accepted Answer

Correct answer: B. An aldehyde with a molar mass of 44 g/mol is acetaldehyde/ethanal (: ). Since reductive ozonolysis produces exactly two moles of and no other products, the original alkene must be symmetrical and contain two groups. Rejoining these fragments at the double bond yields , which is But-2-ene.

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