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ChemicalBook CAS DataBase List 2,4-Diaminotoluene
95-80-7

2,4-Diaminotoluene synthesis

13synthesis methods
It is prepared by hydrogenation of 2,4-dinitrotoluene using a nickel catalyst. Commercial samples often contain up to 20% of the 2,6-isomer.
-

Yield:95-80-7 98%

Reaction Conditions:

with formic acid;trifluoroborane diethyl ether

Steps:

4 EXAMPLE 4
EXAMPLE 4 20 parts freshly distilled ether, 1.74 parts (0.01 mole) 2,4-toluene-diisocyanate, 2.8 parts (0.02 mole) boron trifluoride etherate and 1.0 part (0.02 mole) 98% formic acid were combined and reacted as described in Example 1. Neutralization and isolation procedures described in Example 2 followed. 1.19 g (98% yield) 2,4-toluenediamine were recovered, having a melting point of 97° C.-98° C.

References:

Drexel University US5041670, 1991, A

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