2-Ethyl-l,4-dimethylbenzene

Of the three isomeric C-ethylated anilines, there are thermochemical data24 only for the ortho isomer. Equation 2 predicts enthalpies of formation of —29.7 (lq) and 34.4 (g) k.l mol 1. Equation 2 also suggests that the difference between enthalpies of formation of 2-ethylaniline and any of the C,C-dimethylaniIines would be the same as that between ethylbenzene and any of the dimethylbenzenes, namely ca 11-13 kJmol-1. Or said differently, equation 6 is expected to be thermoneutral. The expectation is met for 2,4- and 2,5-dimethylaniline, and nearly so for 2,6-dimethylaniline. 

Dimethyl-1,2-benzenedicarboxylate, see Dimethyl phthaiate Dimethylbenzene-odicarboxylate, see Dimethyl phthaiate 0,0-Dimethyl-5 [l,2-bis(ethoxy-carbonyl)ethyl]dithio-phosphate, see Malathion... 

---