Synthesis of 2,4-Disubstituted Pyrroles by Rearrangements of 2-Furanyl Carbamates
作者:Sezgin Kiren、Xuechuan Hong、Carolyn A. Leverett、Albert Padwa
DOI:10.1021/ol900059e
日期:2009.3.19
2,4-Disubstituted pyrroles were synthesized by an oxidative rearrangement of a furanyl carbamate followed by sequential reaction of the resulting 5-methoxypyrrol-2(5H)-one with different alkyl lithiates. The final step of the procedure involves heating the ring opened 1-methoxy-5-oxopentylcarbamate with a primary amine.
通过呋喃基氨基甲酸酯的氧化重排,然后使所得的5-甲氧基吡咯-2(5 H)-one与不同的烷基锂酸酯顺序反应,合成了2,4-二取代的吡咯。该方法的最后步骤涉及将开环的1-甲氧基-5-氧戊基氨基甲酸酯与伯胺一起加热。