Electric Literature of 4971-56-6, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.4971-56-6, Name is Furan-2,4(3H,5H)-dione, molecular formula is C4H4O3. In a article，once mentioned of 4971-56-6
[4+2+1] domino cyclization in water for chemo- and regioselective synthesis of spiro-substituted benzo[b]furo[3,4-e][1,4]diazepine derivatives
New regio- and chemoselective [4+2+1] domino cyclization consisting of the formation of two spiro rings and five sigma bonds has been developed for the synthesis of spiro-substituted benzo[b]furo[3,4-e][1,4]diazepine derivatives. The reaction is a multicomponent domino green process and can be readily performed by reacting inexpensive starting materials of benzene-1,2-diamines, tetronic acid and 2,2-dihydroxy-2H-indene-1,3-dione in aqueous solution under microwave irradiation. The present synthesis shows attractive characteristics, such as the use of water as reaction media, convenient one-pot operation, short reaction periods of 10-18 min and reduced waste production without the use of any strong acids or metal promoters. This synthesis serves as a nice addition to GAP (Group-Assistant-Purification) chemistry in which purification via chromatography and recrystallization can be avoided, and the pure products were obtained simply by washing the crude products with 95% EtOH.
A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 4971-56-6
Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem