Process of preparing 3-carboxymethyl-2-carboxy-chromones

Details Process of preparing 3-carboxymethyl-2-carboxy-chromones Process of preparing 3-carboxymethyl-2-carboxy-chromones

1980-07-14

1981-12-22

Chan, Nicky

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603405R, 546 89, 546 92, 549 44, 549 48, C07D71122

Patent

active

043070205

ABSTRACT:
2-Carboxymethyl-3-carboxy-chromones and esters of the formula ##STR1## in which R, R.sup.1 and R.sup.2 each independently is hydrogen, an optionally substituted alkyl, alkenyl, cycloalkyl, cycloalkenyl, aralkyl or aryl group, halogen, hydroxyl, cyano or an optionally substituted alkoxy aryloxy, aralkoxy, alkoxy-carbonyl or dialkylamino group, or

REFERENCES:
patent: 3862143 (1975-01-01), Klutchko et al.
patent: 3879427 (1975-04-01), Strandtmann et al.
Ellis et al., JCS, Perkin I, 1974, 2570.

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