作者: Anton V. Dolzhenko , Shiqi Bai , Anna V. Dolzhenko , Wai Keung Chui
DOI: 10.1002/JHET.851
关键词:
摘要: A new convenient synthon for heterocyclic chemistry, namely 1H-pyrazolo[3,4-b]pyridin-3-ylguanidine was successfully prepared by selective guanylation of 1H-pyrazolo[3,4-b]pyridin-3-amine. series 3,4-dihydropyrido[2′,3′:3,4]pyrazolo[1,5-a][1,3,5]triazin-2-amines synthesized from using aldehydes or ketones as one-carbon inserting reagents. The tautomeric preferences the products were determined spectroscopic (e.g., 2D NOESY NMR) and single crystal X-ray diffraction data.