5-Bromo-2-oxindole → 1-(5-Bromo-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-6,7-dihydro-2H-pyrano[3,4-c]pyrrol-4-one

Participants

Role	Name	HCID	Charge
Reactant	5-Bromo-2-oxindole	HCID 611193	—
Reactant	4-Oxo-2,4,6,7-tetrahydropyrano[3,4-C]pyrrole-1-carbaldehyde	HCID 9834049	—
Product	1-(5-Bromo-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-6,7-dihydro-2H-pyrano[3,4-c]pyrrol-4-one	HCID 69707548	—

5-Bromo-1,3-dihydro-indol-2-one was condensed with 4-oxo-2,4,6,7-tetrahydro-pyrano[3,4-c]pyrrole-1-carbaldehyde to give the title compound.