[alphahydroxy]

Just a quick question - does anyone know what kind of group might give rise to a ¹³C NMR shift of 229 ppm ?

I've got a sample, it's contaminated with a little triphenyl phosphine by the looks of things, but I can't really see anything in the proton spectrum that correlates to the mystery signal in the carbon.

Or does anyone know a good place to find such information without having to trawl through the shift ranges of a hundred and one differnet functionalities...?


any help appreciated!


cheers

[movies]

Sounds like a thiocarbonyl.  There might be some ketone carbons that show up there too, but those are usually in the 220-190 range.