SELECTIVE OXIDATION OF CARBALKOXY-1,3-INDANDIONE SALTS

摘要

1385102 Selective oxidation of carbalkoxy-1,3- indanedione salts A E PIERCE 3 May 1972 [3 May 1971] 20593/72 Heading C2C The invention comprises a method for the preparation of a compound of formula wherein the ring A is substituted or unsubstituted by reacting (a) a compound of formula wherein M represents an alkali metal or alkaline earth metal and R represents an alkyl group with (b) bromine, HBr or HCl and (c) a dialkylsulphoxide.