摘要:
New intermediates, and processes therefor, provide an efficient method for deriving 4-amino-1,2,-2a,3,4,5-hexahydrobenz[cd]indoles, which are themselves intermediates to useful CNS agents, from the Kornfeld-Woodward ketone and like compounds. Preferred embodiments provide means for the preparation of substantially pure enantiomers of the desired 4-amino-1,2,2a,3,4,5-hexahydrobenz[cd]indole.
摘要:
New intermediates, and processes therefor, provide an efficient method for deriving 4-amino-1,2,2a,3,4,5-hexahydrobenz[cd]indoles, which are themselves intermediates to useful CNS agents, from the Kornfeld-Woodward ketone and like compounds. Preferred embodiments provide means for the preparation of substantially pure enantiomers of the desired 4-amino-1,2,2a,3,4,5-hexahydrobenz[cd]indole.
摘要:
A series of benzoquinolin-3-ones are pharmaceuticals effective in treating conditions consequent on both Type I and Type II 5.alpha.-reductase and their preparation is disclosed.
摘要:
2-Amino-5-chloropyridine is prepared by chlorinating 2-aminopyridine in a strongly acidic medium. 2-Amino-5-chloropyridine is a useful intermediate in the preparation of chloro-substituted-imidazo-pyridine herbicides.
摘要:
4-Amino-6-iodo-1,2,2a,3,4,5-hexahydrobenz[ cd]indoles are useful intermediates to 4-amino-1,3,4,5-tetrahydrobenz [cd]indoles containing aminocarbonyl or alkoxycarbonyl substituents in the 6-position which are useful for the treatment of various disorders of the central nervous system.
摘要:
The process for brominating pyrimidine which comprises reacting bromine at an elevated temperature with the hydrogen halide addition salt of pyrimidine in an organic solvent substantially inert to the action of bromine under the conditions of the process. The process is also shown to be applicable to other nitrogen-containing heterocycles.
摘要:
The present invention relates to a process for preparing 5-nitroquinoline hydrohalide comprising: (A) heating a slurry comprising a mixture of nitroquinoline position isomer hydrohalide salts in wet dimethylformamide to form a solution; (B) cooling the solution of Step (A) until a precipitate comprising 5-nitroquinoline hydrohalide is formed; and (C) collecting the precipitate.