nitration of salicylic acid

Syed M Mudassir Organic Lab Section: 20521 October 1 st, 2018 Nitration of Salicylic Acid Reaction Scheme: Results/Discussion: The nitration of salicylic acid is an example of electrophilic aromatic substitution, the aromatic compounds are electron rich systems that are more stable than their aliphatic counterparts due to being stabilized by resonance. Objective: To prepare 5-Nitro salicylic acid from salicylic acid Apparatus/Glassware Required: Conical flask, beaker, volumetric flask, measuring cylinder, water bath, suction pump and Buchner funnel Chemicals Required: Salicylic acid, Acetic acid and Calcium nitrate tetrahydrate. Introduction and Purpose Until 1874 commercial salicylic acid was synthesized entirely from natural wintergreen oil. Has a Strong Activator and a Moderate Deactivator (so there will be some cancelling affects, but Salicylic Acid is most likely MORE REACTIVE than Benzene); if you are unsure, run benzene vs. salicylic acid and see which rxn got done faster 2. in a SS316 tubular microreactor. Draw out a detailed mechanism for the nitration of salicylic acid. Compound 19 was completely converted to mono-nitro derivatives in less than 7 min, and afforded 5-nitrosalicylic acid (20) as the major product (Scheme 7). Sodium Salicylate is the sodium salt of salicylic acid.As a nonsteroidal anti-inflammatory drug (NSAID), sodium salicylate irreversibly acetylates cyclooxygenases I and II, thereby inhibiting prostaglandin synthesis and associated inflammation and pain. The complex formed by nitration of salicylic acid under highly acidic conditions absorbs maximally at 410 nm in basic (pH>12) solutions.
Objective: To prepare 5-Nitro salicylic acid from salicylic acid Apparatus/Glassware Required: Conical flask, beaker, volumetric flask, measuring cylinder, water bath, suction pump and Buchner funnel Chemicals Required: Salicylic acid, Acetic acid and Calcium nitrate tetrahydrate.

In another example, continuous flow nitration of salicylic acid (19) with HNO 3 /AcOH was performed by Kulkarni et al. Aromatic nitration. The 25 wt% H 3 PO 4 /TiO 2 ‐ZrO 2 (1/1)‐surf catalyst showed good selectivity and yield in a short time for the nitration of salicylic acid and some other aromatic compounds. Protein Tyrosine Nitration as a Marker of Nitrosative Stress. If you become pregnant while using salicylic acid, talk to your doctor right away about its risk and benefits.
Then, a number of nitration reactions were carried out with a variety of aromatic compounds in the optimum condition.

The nitration of salicylic acid by means of HNO3/AcOH is investigated, and the results are compared with those obtained using different nitrating systems: HNO3/H2SO4/H2O (mixed acid), HNO3/Ac2O/AcOH, aqueous HNO3 (70% by weight) at 343 K. Little differences are found in terms of yield of the desired product (5-nitrosalicylic acid) among HNO3/AcOH mixture, mixed acid, and HNO3/Ac2O/AcOH …
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