作者:Hyun-A Chung、Jeum-Jong Kim、Ho-Kyun Kim、Deok-Heon Kweon、Sang-Gyeong Lee、Yong-Jin Yoon、Su-Dong Cho
DOI:10.1002/jhet.5570420425
日期:2005.5
This paper presents the synthesis of some alkyl or aryl pyridazinyl ethersfrom 2-alkyl-4-halo-5-hydroxy-and 2-alkyl-4,5-dichloropyridazin-3(2H)-ones or 3,6-dichloropyridazine. Reaction of 2-alkyl-4-halo-5-hydroxypyridazin-3(2H)-ones 1 with 1,2-dibromoethane or 1,3-dibromopropane gave the corresponding monopyridazin-5-yl ethers 2 and α,ω-[di(pyridazin-5-oxy)]alkanes 3. Treatment of 4 with 4-substituted-phenol
Concurrent alkylation-methoxylation of 4,5-dihalopyridazin-6-ones and synthesis of 5-halo-4-hydroxypyridazin-6-ones
作者:Su-Dong Cho、Woo-Yong Choi、Yong-Jin Yoon
DOI:10.1002/jhet.5570330605
日期:1996.11
1-Alkyl-5-halo-4-methoxypyridazin-6-ones were synthesized from 1-alkyl-4,5-dihalopyridazin-6-ones by the concurrentalkylation-methoxylation. 1-Alkyl-5-halo-4-hydroxypyridazin-6-ones were also prepared.