Keaver

I don't have a number pad on my laptop

Ok we're doing diels-alder reactions and I have this reaction I'm not sure if there is no reaction or if i do have the correct answer here. 1,3-butadiene + trans-1,2-N=_CCH=CHC=_N =_ are triple bonds. I came up with a Hexene that has 2 CH2N groups on the 3,4 carbons that are trans to eachother and of course the double bond at the 1 carbon. I came up with the correct soultion right or was it no reaction for some reason that I can't see?

Ok the question goes the diels-alder mechanism is best described as a. proceeding stepwise by cation intermediate b. proceeding stepwise by radical intermediate c. proceeding by a syn cycloaddition d. proceeding by an anionic radical cycloaddition e. Proceeding by a "no mechanism" electrophilic addition I know that a and b are incorrect because if it was stepwise then the stereochemistry would not be retained the reaction wouldn't work out. I'm leanin toward E as the answer but I'm not positive.

Ok I finally ended up getting it and this post helped a ton there were 2 oxygens. One was double bonded the other was not there were 2 CH3 on the end attached to a CH. It all checked out with the NMR and it fit.

Ok for the MS the 102 is the fomula mass for the IR I believe the carbonyl group is actually O=CR2 the peaks just below 3000 are then just C-H for H NMR I find that the ratio of hydrogens is 3:1:6 When split into a septet means there are 6 adjacent Hydrogens and a dublet indicates 1 adjacent hydrogen. I counted up the hydrogens which would then be 7 hydrogens from the This is as far as I can see right now I think I have the right carbonyl group now though. The or it would be C8H18 if it was just a normal alkane

I have a MS, IR, NMR problem and I don't know where to go from here. I have everything that I know for sure written on the doc and I'm pretty much stuck trying to figure out this structure. I've never done any NMR, IR, or MS before so this is pretty confusing right now. Any direction on the C13 spectral data would be fantastic and does what I have written so far seem correct? So far the closest thing I've got to the answer is a tert-butyl group attached to a carbon with a double bond O an OH coming off of it. This comes out to the relative formula mass of 102 but there's only 2 types of H where as the H NMR says there should be different kinds of H.