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What is 2,4 Dinitrophenol is formed from? and explain in detail?
ANSWER: (B) Picric acidREF: A Textbook Of Organic Chemistry 3rd ed By Asha Viswas, Ks Tewari page 555, Organic Chemistry: Aromatic, Alcohols Aldehydes & Acids By Amit Arora page 94When O and P- Nitrophenols are nitrated, 2,4-dinitrophenol is formed, this in turn can be further nitrated to 2,4,6 trinitrophenol (picric acid). Picric acid is prepared commercially by first sulphonating phenol and then nitrating the product.Picramic acid and 2,4-dinitrophenol (2,4-DNP), which are transformation products of picric acid.Picric acid (2, 4, 6-trinitrophenol) when reduced with sodium sulphide forms picraamic acid (2-amino-4, 6-dinitrophenol).The picric acid Meisenheimer complex released nitrite and produced 2,4-dinitrophenol.