In general bi tosyl group substituted phenylene diamine only is easy, but how is it possible to get a monosubstituted compound?
You can choose the nitroanilines as a starting compond, after tosylated the amino group you can use reduction for the nitro group with ETOH/Zn.
You can use 1 eq. Of tosyl group and 1 eq of the phenylene diamine, you will get mixture of the disubstituted and monosubstituted which can be easily separated by column chromatography
I want to prepare one amine-protected phenylenediamine (another amine must be free).
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Any methods, any solvents, or mixture of solvents necessary to crystallize.
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