ChemicalBook CAS DataBase List 1,2-DIAMINO-4,5-DIFLUOROBENZENE

1,2-DIAMINO-4,5-DIFLUOROBENZENE synthesis

7synthesis methods

Product Name:1,2-DIAMINO-4,5-DIFLUOROBENZENE
CAS Number:76179-40-3
Molecular formula:C6H6F2N2
Molecular Weight:144.12

78056-39-0 Synthesis

78056-39-0
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$5.00/1g

76179-40-3
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$5.00/250mg

Yield:76179-40-3 98%

Reaction Conditions:

with hydrogen;palladium 10% on activated carbon in methanol; under 2585.81 Torr; for 3 h;

Steps:

10.1

4,5-Difluoro-2-nitro-aniline (10 g, 57 mmol) and 10% palladium on carbon (2.0 g, 1.9 mmol) were placed in methanol (150 mL). The mixture was hydrogenated at 50 psi in a hydrogenator. After 3 hours the reaction mixture was filtered through diatomaceous earth and concentrated to a solid which was dried overnight (8.05 g, 98%).

References:

US2005/43292,2005,A1 Location in patent:Page/Page column 14