jacknife360

Problem is, I count 7 different proton environments. 2 different methyls, a CH2 on an alkene and those on the ring (4 different environments). The peak with an itensity of 1 is not split, so must be near no inequivalent proton environment? Where is that proton? The intensity of 6 also puzzles me, because I can't find any proton environment with 6 protons in. It's prep for labs, they only start in a week... plenty of time!

I cannot work out this 1H NMR spectra of d(+) carvone. The peaks have (from left to right) the relative intensities 1, 2, 5 and 6. This adds up to the 14 protons that carvone has, but apart from that I can't work out which peaks correspond to which proton environments. Thanks for any help.

Mate, HCl and Fe catalyst, that's all I read.

I've read that you can reduce aliphatic nitro groups to amines using HCl and an iron catalyst. What proportions are needed and is the catalyst pure iron or a salt? Does this work with eg. (nitromethyl)-benzene, or is this affected too much by the aromatic ring?

Is it possible to electroplate lead with a thin layer of copper, and how would one go about doing so? Thanks for any help

So. how do you reckon I would get a chloroform layer witout any acetone in it? Cheers ears

If I had a mixture of chloroform, acetone and water, which solvent would the acetone dissolve in? The chloroform and water would separate. I know that acetone is miscible in water, but it's also soluble in chloroform. Thanks for any help

But the H2O2 oxidised the Co 2+ to Co 3+, as well as effervescing. Maybe two simultaneous reactions involving Hydrogen peroxide a decomposition to oxygen and water and H2O2 acting as oxidising agent. Thanks for your help

How does hydrogen peroxide (~ 30%) act as an oxidising agent (Co2+ --> Co3+), while at the same time a producing a gas (I assume it's oxygen)? This all happens in acidic solution. I can see how it works if it's in alkaline solution. Thanks for any help.

How do I separate 2 optical isomers from one another? There's obviously been large amount of money pumped into the problem by pharm' companies.

What is the coordination number of copper in the oxalato copper (II)? I'm thinking 6 or 8 but can't quite be sure. Thanks for any help. Its made by mixing 90*c potassium oxalate monohydrate (K2C2O4.H2O) with 90*c copper (II) sulphate pentahydrate (CuSO4.5H2O) Cheers

Should i use dilute or concentrated HCl? Equimolar amounts ie. ratio of tryptamine : HCl 1:1?

How do you convert tryptamine to tryptamine hydrogen chloride (HCl). Just add HCl (aq)?

Anybody know if the aromatic chemical olivetol (5-Pentylresorcinol / 5-Pentyl-1,3-benzenediol) is present in any plants? Thanks for any help

Does anybody know how to make olivetol (5-Pentylresorcinol; 5-Pentyl-1,3-benzenediol)? Any help is much appreciated.