2,3-Diaminotoluene → HCID 86712415, compound

Participants

Reaction Steps

Tolylene dicarbamate was obtained in the same manner as in Example 1, except that the reaction time in the carbamate-forming reaction was set to 10 hours and that 8 g of the decomposed diaminotoluene (second diaminotoluene) obtained in Preparation Example 2 was blended with 100 g of the first diaminotoluene in the mixing step. It was confirmed that tolylene dicarbamate was obtained at a yield of 98 mol % as the total amount of 2,4-bis(butoxycarbonylamino)toluene (2,4-tolylene dicarbamate) and 2,6-bis(butoxycarbonylamino)toluene (2,6-tolylene dicarbamate). The isomer ratio of the mixed diaminotoluene was 2,4-diaminotoluene/2,6-diaminotoluene=81.1/18.9 (molar ratio).

Provenance & Evidence