An olefin "X" undergoes ozonalysis reaction to yield acctone...

An olefin "X" undergoes ozonalysis reaction to yield acctone and formaldehyde as the products. The IUP\LambdaC name of the olefin $\mathrm{X}$ is
(1) I-methyl prop-2-ene
(2) 2 -methyl prop-2-ene
(3) 3-methyl prop-2-ene
(4) 2 -methyl prop-1-ene

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Key Concepts

Ozonolysis Reaction

Ozonolysis is an organic reaction where ozone (O?) cleaves the carbon–carbon double bond of alkenes, resulting in the formation of carbonyl compounds. This reaction is a key method for identifying structural features of alkenes because the nature of the carbonyl products directly reflects the substitution pattern of the original double bond.

Alkene Structural Analysis from Cleavage Products

By analyzing the carbonyl products obtained from ozonolysis, one can deduce the original alkene structure. The carbon fragments that form the aldehyde or ketone groups correspond to the respective parts of the double bond. In cases where one product is formaldehyde and another is a ketone like acetone, it indicates that one double-bond carbon was unsubstituted (leading to formaldehyde) while the other was disubstituted (forming the ketone).

IUPAC Nomenclature Rules for Alkenes

IUPAC nomenclature for alkenes requires that the double bond be given the lowest possible locants in the carbon chain. This sometimes leads to numbering the chain such that the double bond begins at carbon-1, with substituents numbered accordingly. In determining the correct name, one must consider both the position of the multiple bond and the substituent groups attached to it, ensuring the final designation accurately reflects the structure.

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