2,3-DIHYDRO-1,4-DITHIINO[2,3-C]FURAN-5,7-DIONE

2,3-Dihydro-1,4-dithiino[2,3-c]furan-5,7-dione (5,6-dihydro-1,4-dithiin-2,3-dicarboxylic anhydride, dhca, 3,6-Dithia-3,4,5,6-tetrahydrophthalic anhydride) may be used in the synthesis of the following:

• photoluminescent three-dimensional (3-D) AgI coordination polymer
• 5,6-dihydro-1,4- dithiin-2,3-dicarboxylate
• Cu^II and Mn^II coordination complexes with 5,6-dihydro-1,4-dithiin-2,3-dicarboxylate as a primary building block
• 2-heteroaryl-4,7-dithia-4,5,6,7-tetrahydro-1,3-indandiones
• 3-arylmethylene-4,7-dithia-4,5,6,7-tetrahydrophthalides

2,3-Dihydro-1,4-dithiino[2,3-c]furan-5,7-dione is an anhydride of dicarboxylic acid.