A series of 4-substituted phenylguanidinium derivatives was synthesized and its antimicrobial activity was evaluated in vitro against eight potentially pathogenic strains of fungi.
Development of a Robust Process for the Preparation of High-Quality Dicyclopropylamine Hydrochloride
作者:Boguslaw Mudryk、Bin Zheng、Ke Chen、Martin D. Eastgate
DOI:10.1021/op500031z
日期:2014.4.18
A short and efficient process for the preparation of high-quality dicyclopropylamine HCl salt is described. An oxygen-mediated Chan-Lam coupling of N-cyclopropyl 4-nitrobenzenesulfonamide with cyclopropylboronic acid was followed by an optimized p-nosyl deprotection with 1-decanethiol, providing the title compound in high chemical yield. This process addresses many of the challenges and liabilities inherent in previous synthetic approaches to this challenging molecule. The collection of key safety data enabled implementation of an oxygen-mediated process on-scale and ensured safe operation throughout development, optimization, and processing.