2 methyl 5 ethyl aniline imine

Phenyl-methyl-ethyl-ketene imine (N-(2-methyl-l-butenylidene)-aniline) (193)... 

The functionalized ligands were tested for various hydrogenation reactions (see Scheme 12.17). Ir-Josiphos bound to silica gel as well as to a water-soluble complex produced TONs in excess of 100000 and TOFs up to 20000h for the Ir-catalyzed hydrogenation of 2-methyl-6-ethyl aniline (MEA) imine to give an intermediate for (SJ-metolachlor [45a]. The polymer-bound Ir complex was much less active, and in all cases the ee-values were comparable to those for the homogeneous catalyst Selected results are summarized in Table 12.3. However, no immobilized system could compete with the homogeneous catalyst which is used to produce >10000 tonsy of enantioenriched (. S J-metolachlor and which, under optimized condi-... 

Arylazoarylimines (527), with a methyl or ethyl group ortho to the imine function (prepared by oxidation with manganese dioxide of arylaminohydrazones from anilines (525) and chlorohydrazones... 

The arylazoarylimines (48), carrying an aromatic methyl or ethyl group on the ortho position to the imine function and prepared by the reaction of anilines (46) with chlorohydrazones (47) in the presence of triethylamine followed by oxidation with manganese dioxide of the resulting arylamino-hydrazones, underwent thermal intramolecular cyclization in refluxing xylene in the presence of a catalytic amount of dabco to give the l/f-4,5-dihydro-l,3,4-benzotriazepines (49) in 50-87% yields (Scheme 7) <86JHC1795>. 

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