Related Experiment Video
Updated: Jun 2, 2026

Modification and Functionalization of the Guanidine Group by Tailor-made Precursors
Published on: April 27, 2017
N,N'-Bis(3β-acet-oxy-5α-cholest-6-yl-idene)hydrazine
Abstract:
The asymmetric unit of the title compound, C(58)H(96)N(2)O(4), contains two crystallographically independent mol-ecules. All cyclohexane rings are in chair conformations, while the furan ring is in an envelope conformation in one mol-ecule and a twist conformation in the other. Two acetaldehyde and one isobutane groups are disordered over two orientations with refined site occupancies of 0.940 (4):0.060 (4) and 0.791 (7):0.209 (7), respectively. In the crystal, mol-ecules are stacked along the a axis through van der Waals inter-actions.
More Related Videos
07:30A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones
Published on: January 21, 2020
11:01Preparation and In Vivo Use of an Activity-based Probe for N-acylethanolamine Acid Amidase
Published on: November 23, 2016
Related Concept Videos
Diazonium Group Substitution: –OH and –H
Aldehydes and Ketones with HCN: Cyanohydrin Formation Overview
Aldehydes and Ketones with HCN: Cyanohydrin Formation Mechanism
Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles
The IUPAC and common names of amides are derived from the parent carboxylic acid, by replacing the suffix “oic acid” and “ic acid,” respectively, with “amide.” In the following example, the IUPAC name ethanamide is derived from ethanoic acid, and the common name, acetamide, is obtained from acetic acid.
Carboxylic Acids to Methylesters: Alkylation using Diazomethane
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism