how to i draw cyclopentenol

[nitelyechos]

i tried drawing the bone line structure for 2-cyclopentenol and 3-cyclopentenol which is one of an exercise i am doing for class. i looked up the correct answer and apparently cyclopentenol has a double bond in the carbon ring and the 2 or 3 changes its position. based on the name alone how the heck am i supposed to know that i'm supposed to draw cyclopentenol with a double bond?

[Fuzzwood]

pentEnol instead of pentAnol

[imatfaal]

As Fuzzwood hinted there is a lot to a name - try having a read of this page , or a more complex one - if they don't suit try searching on organic molecule naming conventions

[hypervalent_iodine]

As the others have said, you might like to look up basic naming conventions. The big hint as to how you were meant to know there was a double bond was the 'en' (for alkENe) as opposed to 'an' (for alkANe) as Fuzzwood pointed out. Similarly, if it were a triple bond, you would see 'yn' for alkYNe. IUPAC conventions can get confusing with large, non-linear molecules, but basic ones such asnyoursnarenfairly easy to figure out once you get a feel for the prefixes, etc. And of course the best way to get a feel for it is to practice. Start small and work your way up and you'll soon start to find it comes quite naturally to you.