M-Ethylaniline

Hydrodesulfurization of the mixture of isomers obtained by the nitration of benzo[6]thiophene gives a mixture of amines, the identification of which indicates the possible orientations of the nitro groups.84,412 It should be noted, however, that 5- and 7-nitrobenzo[6]-thiophene both give m-ethylaniline in this reaction. 

Fig. 5.5. GC separation of TFA derivatives of arylamines. Peak 1 = solvent (CH2CI2) 2 = N-methyl-aniline 3 = N,N-dimethylaniline 4 = N-ethylaniline 5 = N-methyl-o-toluidine 6 = N-methyl-m-toluidine 7 = N-methyl-p-toluidine 8 = o-toluidine 9 = o-ethylaniline 10 = aniline 11 = 2,5-dimethyl-aniline 12 = 2,6-dimethylaniline 13 = 2,4-dimethylaniline 14 = m- toluidine 15 = p-toluidine 16 = 2,3-dimethylamline 17 = 3,5-dimethylaniline 18 = m-ethylaniline 19 = p-ethylaniline 20 = 3,4-dimethylaniline. Conditions stainless-steel column, 18 ft. X 0.125 in. O.D., 9.5% Apiezon L + 3.6% Carbowax 20M on Aeropack 30 (80—100 mesh) helium flow-rate, 100 ml/min column temperature, 152°C. (Reproduced from Anal. Chem., 39 (1967) 1188, by courtesy of the American Chemical Society.)...

Nomenclature of Substituted Anilines Section 6.3E (a) m- ethylaniline (b) N-ethylaniline ... 

TEM studies on polyethylanilines show that poly(m-ethylaniline) also appears to be more fibrillar than the ortho-isomer. For anisidine, although no fibrillar structure is obtained for either meta- or ortho-polymer, the particles of the meta-isomer do look smaller than the ortho-isomer (Figure 7.52). 

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