Adamantyl-substituted biaromatic compounds and pharmaceutical/cosmetic
申请人:Centre International de Recherches Dermatologiques Galderma
公开号:US05786379A1
公开(公告)日:1998-07-28
Novel pharmaceutically/cosmetically-active adamantyl-substituted biaromatic compounds have the structural formula (I): ##STR1## wherein Ar is a radical having one of the formulae (a')-(f'): ##STR2## and are useful for the treatment of a wide variety of disease states, whether human or veterinary, for example dermatological, rheumatic, respiratory, cardiovascular, bone and ophthalmological disorders, as well as for the treatment of mammalian skin and hair conditions/disorders.
METHOD FOR PREPARTION OF SUBSTITUTED ADAMANTYLARYMAGNESIUM HALIDES
申请人:Kalvinsh Ivars
公开号:US20100113816A1
公开(公告)日:2010-05-06
The present invention concerns fine organic synthesis, particularly the method for preparing of substituted adamantylarylmagnesium halides.
The known methods for preparing Grignard's reagent from substituted adamantylarylhalide give very low yeld of the desired product. Substituted adamantylarylhalides are active intermediates that by interacting with various electrophiles provide for a wide range of biologically active compounds.
The aim of current invention was to develop a method for preparing substituted adamantylarylmagnesium halides. The aim was attained adding lithium chloride in the Grignard's reagent synthesis by acting on is magnesium metal in dry tetrahydrofuran under argon by substituted adamantylarylhalide.
It was demonstrated that adding lithium chloride to adamantylarylhalide within a range from 1:1 to 1:2 provides for stable high yield of the desired end product.