Reactions with dimethylformamide-dimethylacetal: Synthesis and reactions of several new pyridine and pyrazolo[3,4-b]pyridine derivatives
作者:Mohamed A. A. Elneairy、Mohamed A. M. Gad-Elkareem、Adel M. Taha
DOI:10.1002/hc.20312
日期:2007.5
ne]amino}pyridine derivatives 2a,b. The latter compounds reacted with hydrazine hydrate to afford the 3,6-diamino-1H-pyrazolo[3,4-b]pyridine derivative 4 and 3-amino-5-hydrazino-1H-pyrazolo[4′,3′:5,6]pyrido[2,3-d]pyrimidine derivative 7, respectively. Compound 4 condensed with DMF-DMA to yield the 3,6-bis[(N,N-dimethylamino)methylene]amino}-1H-pyrazolo[3,4-b]pyridine derivative 10, which reacted with
6-氨基吡啶-2(1H)-硫酮 1a,b 与二甲基甲酰胺-二甲基缩醛 (DMF-DMA) 反应得到相应的 6-[(N,N-二甲氨基) 亚甲基]氨基}吡啶衍生物 2a,b。后一种化合物与水合肼反应得到 3,6-二氨基-1H-吡唑并[3,4-b]吡啶衍生物 4 和 3-氨基-5-肼基-1H-吡唑并[4',3':5, 6]吡啶并[2,3-d]嘧啶衍生物7。化合物 4 与 DMF-DMA 缩合得到 3,6-双[(N,N-二甲氨基)亚甲基]氨基}-1H-吡唑并[3,4-b]吡啶衍生物 10,其与丙二腈反应得到相应的吡啶并吡唑并嘧啶衍生物 15. © 2007 Wiley Periodicals, Inc. Heteroatom Chem 18:399–404, 2007; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc