A convenient approach directly from triglycerides toward the producing of thia-wax esters as bio- and chemical raw materials

An Ionic Liquid Promoted Clean and Direct Conversion of Triglycerides into Bio‐Based Thermal Energy Storage Materials

“…Triglycerides were also used in the ionic liquidcatalysed transesterification methods previously developed by our working group, but these processes took longer to complete (8 and 6 h, respectively). [26,27] However, the triglycerides used as the starting compound in the present study can be easily converted into related esters through a faster transesterification reaction (2 h). On the other hand, in the transesterification method we have developed, product isolation can be done easily by crystallization without the need for some laborious purification techniques.…”

“…The catalyst ([Dsim]Cl) used in this study was prepared according to the method given in the literature. [54] Typical Transesterification Procedure: Into a single-necked reaction flask, 1 equivalent of tristearin (0.20 g, 0.22 mmol), 3 equivalents of myristyl alcohol (0.14 g, 0.66 mmol), [Dsim]Cl (0.016 g, 16 mmol%) were added and the resulted mixture was heated at 110 °C (this temperature value was chosen inspired by the studies that previously reported [25][26][27][28] ) for 120 min in a solvent free medium. The reaction flask was cooled and the obtained solid, without isolation of the glycerin byproduct was crystallized from the THF/MeOH (2/8, v/v) solvent mixture to give pure myristyl stearate 1h.…”

“…[22] Studies are still being carried out to synthesize these versatile compounds with more effective and environmentally friendly approaches. [23][24][25][26][27][28] About half a century ago the use of ILs as electrolyte system in batteries has been a remarkable research topic. [29][30][31][32][33] Due to their ability to dissolve many organic and inorganic compounds, they are green solvent candidates that can be used instead of harmful volatile organic solvents in various synthesis reactions.…”

“…Brønsted acidic ionic liquids (BAILs) are important candidates among the preferred catalysts due to their high thermal stability and acidity strength, as well as their more environmentally friendly properties than many toxic metal-containing organometallic catalysts. [25][26][27]41] Zolfigol et al, developed IL 3methyl-1-sulfonic acid imidazolium nitrate, which is an effective reagent for nitration of aromatic compounds in acidic medium [42] and many more imidazole-based BAILs have been developed that can be used for the synthesis of various heterocyclic systems. [43][44][45][46] As it is well known, transesterification occupies an important place among classical organic synthesis reactions because it is an important tool used in the preparation of many different intermediates and/or products.…”

N‐alkyl imidazole‐based homonuclear coordination complex as a neutral organocatalyst for the faster and efficient construction of 3,4‐dihydro‐2H‐1,3‐oxazine scaffold

“…[32] N-alkyl and/or N, N-dialkylated imidazoles and their modified derivatives have been used as catalysts in the synthesis of 1,3-oxazines and variety of organic compounds. [23,[33][34][35][36][37] Some transition metal complexes of N-alkylated imidazoles have been used as catalyst in several different organic synthesis reactions. [38][39][40][41] In continuation of our focus on the N-alkylated imidazolebased organocatalyst systems and to the best of our knowledge, metal complexes of higher N-alkylated imidazoles have not yet been used as catalysts for the producing of 3,4-dihydro-2H-1,3-benzoxazines.…”