[EN] METHYLATION OF INDOLE COMPOUNDS USING DIMETHY CARBONATE<br/>[FR] METHYLATION DE COMPOSES D'INDOLE A L'AIDE DE DIMETHYLCARBONATE
申请人:HOFFMANN LA ROCHE
公开号:WO2001081305A2
公开(公告)日:2001-11-01
A process for manufacturing a methylated indole compounds of formula (I) from the non-methylated precursor with dimethyl carbonate in the presence of a base and/or catalyst at ambient pressure wherein R?1 and R2¿ are defined in the description and claims.