4-Propoxy-3-nitrobenzoic acid synthesis
- Product Name:4-Propoxy-3-nitrobenzoic acid
- CAS Number:35288-44-9
- Molecular formula:C10H11NO5
- Molecular Weight:225.2
1221258-88-3
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Yield:35288-44-9 98%
Reaction Conditions:
with sodium hydroxide in water at 70 - 80; for 12 h;Large scale;
Steps:
3
3-nitro-4-propoxybenzoic acid propyl ester was added into 300 kg of water and 20 kg of sodium hydroxide solution; slowly heated up to 70-80°C for 12 hours, dropped to 15-25°C, and concentrated hydrochloric acid was added to adjust the pH of the solution. 2~3 precipitated pale yellow solids. After cooling to 0~10°C, the mixture was stirred for 2 hours, filtered and dried to obtain 441.4 kg of 3-nitro-4-propoxybenzoic acid. The yield was 98.0%, and the liquid purity was 98.71%.
References:
CN108017543,2018,A Location in patent:Paragraph 0025
59691-12-2
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