![](/CAS/GIF/7330-46-3.gif)
5,5'-Methylenebis(2-aminobenzoic Acid) synthesis
- Product Name:5,5'-Methylenebis(2-aminobenzoic Acid)
- CAS Number:7330-46-3
- Molecular formula:C15H14N2O4
- Molecular Weight:286.28
Yield:-
Reaction Conditions:
with hydrogenchloride in water at 70; for 40 h;Product distribution / selectivity;
Steps:
Anthranilic acid (10 g, 73.2 mmol) was dissolved in water (400 ml). Formaldehyde 37% solution in water (3 g, 36.8 mmol) and HCl 37% solution in water (7.2 g, 73.2 mmol) were added. The solution was stirred at 70° C. for 40 hours. The dispersion was filtered and the filtrate was evaporated under reduced pressure. The crude product was used in the next step without further purification (7.8 g, 58%).MS: [M-2H]-=284
References:
US2010/280268,2010,A1 Location in patent:Page/Page column 32
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