Han Chong, Porco John A
Department of Chemistry and Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA.
Org Lett. 2007 Apr 12;9(8):1517-20. doi: 10.1021/ol0702728. Epub 2007 Mar 15.
[reaction: see text] Zirconium(IV)-catalyzed exchange processes have been developed to prepare both carbamates and ureas from dialkyl carbonates and carbamates employing 2-hydroxypyridine (HYP) and 4-methyl-2-hydroxyquinoline (MeHYQ) as catalytic additives, respectively. A microwave acceleration effect was observed in Zr(IV)-catalyzed carbamate-urea exchange.
[反应：见正文] 已经开发出锆（IV）催化的交换过程，分别使用2-羟基吡啶（HYP）和4-甲基-2-羟基喹啉（MeHYQ）作为催化添加剂，从碳酸二烷基酯和氨基甲酸酯制备氨基甲酸酯和脲。在Zr（IV）催化的氨基甲酸酯-脲交换中观察到微波加速效应。
