Related Experiment Video
Updated: Jun 1, 2026

Continuous Flow Chemistry: Reaction of Diphenyldiazomethane with p-Nitrobenzoic Acid
Published on: November 15, 2017
(E)-2,4-Dihydr-oxy-N'-(2-hydr-oxy-3-meth-oxy-5-nitro-benzyl-idene)benzohydrazide dihydrate
You-Yue Han1, Yong-Hong Li, Qiu-Rong Zhao
1Department of Chemistry and Life Science, Chuzhou University, Chuzhou, Anhui 239000, People's Republic of China.
Abstract:
The asymmetric unit of the title compound, C(15)H(13)N(3)O(7)·2H(2)O, consists of a hydrazone mol-ecule and two solvent water mol-ecules. The mol-ecule adopts an E configuration with respect to the C=N bond. It is relatively planar, with a dihedral angle between the two benzene rings of 2.6 (1)°. There are intra-molecular O-H⋯N and O-H⋯O hydrogen bonds in the hydrazone mol-ecule. In the crystal structure, symmetry-related mol-ecules are linked through inter-molecular N-H⋯O and O-H⋯O hydrogen bonds to form a three-dimensional network.
Related Concept Videos
Diazonium Group Substitution: –OH and –H
Hydrolysis of Chlorobenzene to Phenol: Dow Process
Carboxylic Acids to Methylesters: Alkylation using Diazomethane
Preparation of Epoxides
Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
Epoxidation with Peroxy Acids
Epoxidation of alkenes via oxidation with peroxy acids involves the conversion of a carbon–carbon double bond to an epoxide using the oxidizing agent meta-chloroperoxybenzoic acid, commonly known as MCPBA. Since the O–O bond of peroxy acids is very weak, the addition of electrophilic oxygen of peroxy acids to...
Structure and Nomenclature of Epoxides
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism

