Imidazole-4,5-dicarboxylic acid

light yellow to yellow-brown fine cryst. powder

General procedure: A solution of 10.0 mmol of compound 1a–1d in 14 mL of concentrated sulfuric acid was heated to 100–105°C, 14 mL (0.26 mol) of 30percent aqueous hydrogen peroxide was added dropwise with stirring, and the mixture was stirred for 1 h at 130°C. After cooling, the mixture was poured into water and adjusted to pH 4, and the precipitate was filtered off.General procedure: A solution of 10.0 mmol of compound 1a–1d in 14 mL of concentrated sulfuric acid was heated to 100–105°C, 14 mL (0.26 mol) of 30percent aqueous hydrogen peroxide was added dropwise with stirring, and the mixture was stirred for 1 h at 130°C. After cooling, the mixture was poured into water and adjusted to pH 4, and the precipitate was filtered off.General procedure: A solution of 10.0 mmol of compound 1a–1d in 14 mL of concentrated sulfuric acid was heated to 100–105°C, 14 mL (0.26 mol) of 30percent aqueous hydrogen peroxide was added dropwise with stirring, and the mixture was stirred for 1 h at 130°C. After cooling, the mixture was poured into water and adjusted to pH 4, and the precipitate was filtered off.General procedure: A solution of 10.0 mmol of compound 1a–1d in 14 mL of concentrated sulfuric acid was heated to 100–105°C, 14 mL (0.26 mol) of 30percent aqueous hydrogen peroxide was added dropwise with stirring, and the mixture was stirred for 1 h at 130°C. After cooling, the mixture was poured into water and adjusted to pH 4, and the precipitate was filtered off.in 200 ml of water800 ml of concentrated sulfuric acid (i.e., 80percent concentration), and 50.0 g of 2-propylbenzimidazole was added dropwise30percent hydrogen peroxide 500ml, the reaction exothermic reflux, control the rate of dropping to keep the reaction solution has been boiling. After completion, the reaction was continued for 3 hours. Add water 1000ml, cold to room temperature. The solid was precipitated, and the mixture was stirred at 0 to 5 ° C for 3 hours, filtered, washed with water, and washed with 5percent aqueous sodium sulfite solution (100 ml). The resulting solid column chromatography (eluent: water: methanol = 2: 1, ) Was imidazole-4, 5-dicarboxylic acid 3 · lg, mp 267.3 ° C melting at the same time decomposition.

4,5-Imidazoledicarboxylic acid is an imidazole used for research purposes.

Molecular Weight:156.10
XLogP3:-0.2
Hydrogen Bond Donor Count:3
Hydrogen Bond Acceptor Count:5
Rotatable Bond Count:2
Exact Mass:156.01710661
Monoisotopic Mass:156.01710661
Topological Polar Surface Area:103
Heavy Atom Count:11
Complexity:193
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes