1551089-20-3Relevant academic research and scientific papers
Novel functional ionic liquids as metal-free, efficient and recyclable catalysts for the carbonylation of formaldehyde
Song, Heyuan,Jing, Fuxiang,Jin, Ronghua,Li, Zhen,Chen, Jing
, p. 711 - 716 (2014)
Methyl glycolate (MG) was synthesized as a precursor to ethylene glycol from the catalytic carbonylation of formaldehyde followed by esterification with methanol by using metal-free, efficient and recyclable SO3H- functionalized ionic liquids (BAILs) as catalysts. Among the studied BAILs, N-butyl-N-(3-sulfonylpropyl) thiomorpholine-1,1-dioxide triflate showed excellent activity and MG selectivity. The effects of reaction parameters such as reactant, solvent, catalyst loading, molar ratio of H2O to H 2CO, temperature, pressure, and reaction time were studied. MG was obtained in high yield under mild conditions. At 160 C, 5.0 MPa, and reactant mole ratio of BAIL:H2CO:H2O = l:40:80, 98 % conversion of formaldehyde was achieved with 94 % selectivities of MG. Catalysts did not show any significant deterioration in performance in repeated use up to eight batches. Graphical Abstract: Methyl glycolate (MG) was synthesized from the carbonylation of formaldehyde followed by esterification with methanol using metal-free, efficient and recyclable SO3H-functionalized ionic liquids (BAILs) as catalysts. MG was obtained in excellent yield under mild conditions. The catalyst was reused up to eight consecutive recycles without apparent loss in its catalytic activity. [Figure not available: see fulltext.]
