In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Solvent-free organocatalytic preparation of cyclic organic carbonates under scalable continuous flow conditions, published in 2019, which mentions a compound: 931-40-8, mainly applied to glycerol dimethyl carbonate transesterification solvent free organocatalyst, Formula: C4H6O4.
A solvent-free organocatalyzed process for the transesterification of DMC with 1,2-diols under scalable continuous flow conditions is presented. Process parameters, such as temperature, residence time, DMC/glycerol molar ratio and catalyst loading are optimized for the carbonation of bio-based glycerol using DBU as a model organocatalyst. The catalytic performance of DBU is next compared with other homogeneous organic superbases including the proton sponge, Verkade’s base, guanidines and phosphazenes. 2-Tert-butyl-1,1,3,3-tetramethylguanidine (Barton’s base) stands as the most efficient organocatalyst, providing glycerol carbonate at 87% selectivity and 94% conversion within 2 min of residence time at 1 mol% loading. Representative examples of PS-supported organic superbases of the amidine, guanidine and phosphazene-types are also considered as alternative heterogeneous catalysts. PS superbases typically enable up to 80 h of continuous operation with minor deactivation at elevated flow rates. The methodol. is amenable to a library of other 1,2-diols, including biomass-derived substrates. Depending on the unique structural features of both substrates and products, either online IR or online NMR anal. procedures are implemented for real-time qual. reaction monitoring. A final demonstrator showcases the transposition of the glycerol carbonation to a pilot-scale continuous flow reactor, affording the target cyclic carbonate with a 68.3 mol per day productivity (~8 kg per day).
I hope my short article helps more people learn about this compound(4-(Hydroxymethyl)-1,3-dioxolan-2-one)Formula: C4H6O4. Apart from the compound(931-40-8), you can read my other articles to know other related compounds.