Identify the correct IUPAC name of CH3-CH=CH-CHO.(a) But-2-enal(b) 2-Butenal(c) Buten-2-al(d) ButenalI had been asked this question during an interview.This key question is from Nomenclature and Structure of Carbonyl Groups in portion Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

Identify the correct IUPAC name of CH3-CH=CH-CHO.(a) But-2-enal(b) 2-B

1.	Identify the correct IUPAC name of CH3-CH=CH-CHO.(a) But-2-enal(b) 2-Butenal(c) Buten-2-al(d) ButenalI had been asked this question during an interview.This key question is from Nomenclature and Structure of Carbonyl Groups in portion Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12
Answer» CORRECT choice is (a) But-2-enal To explain: The carbon ATOM of the CHO group is assigned the first number. So, in this case, the double bond OCCURS at second carbon and HENCE, the prefix 2- is used for the naming of double bond -en.

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