[schafer]

Hello again,

I am practicing organic reaction, and came across this:
Butanol + methanol --> (blank) + methanol --> (blank 2)
I understand the reactions here and how to draw them, and I know that the first reaction will result in hemiacetal, and the second in acetal.
My questions are:
what are the rules for naming products that are hemiacetal/acetals?
how do I write the chemical formula of the products?

I also have the same problem when the reaction of alcohol and carboxylic acid. I know the result is a compound with an ester bond, but I dont know how to name it or write the chemical formula.
For example: Propanoic acid (CH3CH2COOH) + ethanol (CH3CH2OH)

Thanks a lot!

[Dan]

I am practicing organic reaction, and came across this:
Butanol + methanol --> (blank) + methanol --> (blank 2)
I understand the reactions here and how to draw them, and I know that the first reaction will result in hemiacetal, and the second in acetal.

Butanol + methanol will not give an acetal or hemiacetal. Do you mean butanal?

Forum policy is that you need to show your attempts at these questions (see forum rules).

Some links to get you started:

http://en.wikipedia.org/wiki/Structural_formula
http://www.chem.ucalgary.ca/courses/351/WebContent/orgnom/index.html

[schafer]

Hello,

Yes, I meant butanal, my mistake.
I know the site you linked to, unfortunately I didn't find acetal there...

I don't know how to show my attempts here, since I can't draw the final product.
You mean write the formulas?
CH3CH2CH2CHO + CH3OH --> CH3CH2CH2CHOHOCH3 (?)

[Dan]

I understand the reactions here and how to draw them

I can't draw the final product.

I don't understand - can you draw them or not?

CH3CH2CH2CHO + CH3OH --> CH3CH2CH2CHOHOCH3 (?)

Basically fine, but at branch points you should indicate a branching substituent with brackets:

i.e. CH₃CH₂CH₂CH(OH)OCH₃ or CH₃CH₂CH₂CH(OCH₃)OH
is this:   

Re: naming esters - I provided a link and there are plenty of tutorials online - have a go yourself and we can take it from there.

Re: naming acetals - fist hit on google for "naming acetals": http://www.acdlabs.com/iupac/nomenclature/93/r93_460.htm - have a go yourself and we can take it from there.

[schafer]

Thanks a lot dan!

I don't understand - can you draw them or not?

It was late, did a mistake. What I meant was I can't name them.

I went over the links, very helpful.

However, I still have a question about writing the chemical formulas in case of  acetals.
For example:
If I have a reaction of butanal+propanol---> butanal propyl hemiacetal... + propanol (again) ---> butanal dipropyl acetal
( I hope I got that right)
The final formula will consist of two branches. Will it be written:
CH3CH2CH2CH(OCH2CH2CH3)OCH2CH2CH3 ?
Thanks again!