The present invention relates to compounds that modulate neurotransmission by promoting the release of neurotransmitters such as acetylcholine, dopamine and norepinephrine. More particularly, the present invention relates to thio-bridged aryl compounds that are capable of modulating acetylcholine receptors and pharmaceutical compositions comprising such compounds. The compounds disclosed are useful for the treatment of dysfunctions of the central and autonomic nervous systems.
Seelig, Justus Liebigs Annalen der Chemie, 1887, vol. 237, p. 163
作者:Seelig
DOI:——
日期:——
A Practical Synthesis of 2,4-Dichloro-3-methyl-6-nitrophenol
作者:Ruicheng Ran、Charles U. Pittman
DOI:10.1080/00397919308013809
日期:1993.11
2,4-Dichloro-3-methyl-6-nitrophenol 2 was prepared by KOH/H2O hydrolysis of a product mixture obtained from chlorination of p-nitrotoluene in the presence of a phase transfer catalyst. A 95-99% yield of 2 based on 2,3,6-trichloro-4-nitrotoluene, 4 (major chlorination product) was achieved in >95% purity.
Brimelow et al., Journal of the Chemical Society, 1951, p. 1208,1212