Acetal classification

[ese]

According to Wiki and my review book, that is an acetal, am I correct in saying that it is NOT an acetal due to the 2 H on the carbon bonded to the 2 -OR groups

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[stockraider]

i though an acetal WAS a carbon bonded to two OR groups, this carbon is bonded to two OR groups, even though they are connected they are still classified as two OR groups.

 

[SuperSaiyan3]

1. how did you upload that picture?
2. yes that is an acetal.

An acetal is a carbon with TWO bonds of alkoxides. You can clearly see that at the carbon at the tip top of the pentagon has 2 alkoxide bonds attached to it.

 

[ese]

The pictures are just links from wiki.

Clarification: I see the carbon between the two oxygen's satisfies the two -OR groups. My question was: if the R3 and R4 are both H then is it still a acetal? Based on both of your answers I guess that a yes.

 

[stockraider]

hmm ok, ya i see your point, and actually have no idea, i thought the only thing was that it has to be bonded to two OR groups, but i guess there could be a caveat to this. anybody have any idea?

 

[thebillsfan]

id go with acetal, there's no reason why just bc it has two hydrogens it shouldnt be an acetal.

 

[Hemichordate]

Well this acetal is definitely wrong.

http://en.wikipedia.org/wiki/File:Acetal_formation.PNG

 

[kentavr]

One of the name for this compound given in NMR database(http://riodb01.ibase.aist.go.jp/sdbs/cgi-bin/direct_frame_top.cgi) is:

ethylene glycol methylene acetal
Standard name is 1,3-dioxolane

I would trust them.

 

[kentavr]

One of the name for this compound given in NMR database(http://riodb01.ibase.aist.go.jp/sdbs/cgi-bin/direct_frame_top.cgi) is:

ethylene glycol methylene acetal
Standard name is 1,3-dioxolane

I would trust them.

Wikipedia confirms that:
http://en.wikipedia.org/wiki/Dioxolane

 

[ese]

One of the name for this compound given in NMR database(http://riodb01.ibase.aist.go.jp/sdbs/cgi-bin/direct_frame_top.cgi) is:

ethylene glycol methylene acetal
Standard name is 1,3-dioxolane

I would trust them.

Thanks! I was looking for that site earlier today!

Wikipedia confirms that:
http://en.wikipedia.org/wiki/Dioxolane

Yup, thats where I got the image, the one in my review book is slightly different.