Different Naming Systems in Textbooks: IUPAC Standards

AI Thread Summary
Different naming conventions for organic compounds, such as 2-butene and but-2-ene, are discussed, highlighting that both are acceptable under IUPAC standards. The conversation notes that IUPAC nomenclature has evolved over time, and it's advisable to consult the latest version of the Blue Book for the most current guidelines. The presence of varying naming systems in textbooks, including the use of older conventions in some educational programs like the IB, indicates a lack of uniformity across different countries and curricula. Overall, both naming formats are recognized, reflecting the ongoing development in chemical nomenclature.
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I have encountered different naming systems in textbooks.

Ignoring cis/trans, for example, some textbooks would give the name 2-butene, while others give but-2-ene.

Are they both acceptable? The newer textbook uses the second type of naming, while the older textbook uses the first. Have the IUPAC standards changed?
 
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How odd, the IB program seems to be using the older system...
 
Different countries also have different systems. But generally they are both accepted.
 

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