作者:Thomas Scattolin、Tawfik Gharbaoui、Cheng-yi Chen
DOI:10.1021/acs.orglett.2c01410
日期:2022.5.27
Carbamates, typically used for the protection of amines, including Cbz, Alloc, and methyl carbamate, can be readily deprotected by treatment with 2-mercaptoethanol in the presence of potassium phosphate tribasic in N,N-dimethylacetamide at 75 °C. This nucleophilic deprotection protocol is superior to the standard hydrogenolysis or Lewis acid-mediated deprotection conditions for substrates bearing a
通常用于保护胺的氨基甲酸酯,包括 Cbz、Alloc 和氨基甲酸甲酯,可以在 75 °C下,在N,N-二甲基乙酰胺中的磷酸三钾存在下,通过用 2-巯基乙醇处理很容易地脱保护。对于具有对这些更传统方法敏感的功能的底物,这种亲核脱保护方案优于标准氢解或路易斯酸介导的脱保护条件。