Available hemiacetals and hemithioacetals of alpha-halo-beta-oxoaldehydes were reacted with phosphorochloridites in the presence of organic bases to obtain previously unknown alpha-heterosubstituted phosphites. It is found that the phosphites, depending on the nature of the carbonyl fragment and the heteroatom, enter intramolccular Perkow reaction or decompose to give unsaturated thioethers and chlorophosphate.
Substituted-hetero-cyclopentanones and cyclopentenones and derivatives
申请人:Warner-Lambert Company
公开号:US05066663A1
公开(公告)日:1991-11-19
Substituted-hetero-cyclopentanones and cyclopentenones and derivatives thereof are described, as well as methods for the preparation and pharmaceutical compositions of same, which are useful as centrally acting muscarinic agents and are useful as analgesic agents for the treatment of pain, as sleep aids and as agents for treating the symptoms of senile dementia, Alzheimer's disease, Huntington's chorea, tardive dyskinesia, hyperkinesia, mania, or similar conditions of cerebral insufficiency characterized by decreased cerebral acetylcholine production or release.
Available hemiacetals and hemithioacetals of alpha-halo-beta-oxoaldehydes were reacted with phosphorochloridites in the presence of organic bases to obtain previously unknown alpha-heterosubstituted phosphites. It is found that the phosphites, depending on the nature of the carbonyl fragment and the heteroatom, enter intramolccular Perkow reaction or decompose to give unsaturated thioethers and chlorophosphate.