638-08-4Relevant articles and documents
Preparation method of distearoyl phosphatidylethanolamine
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Paragraph 0070; 0088-0093, (2021/03/30)
The invention provides a preparation method of distearoyl phosphatidylethanolamine, wherein the preparation method comprises the following steps: (1) under alkaline conditions, carrying out amino protection reaction on glyceryl phosphatidylethanolamine represented by a formula (II) and a compound containing an amino protection group to obtain an intermediate a represented by a formula (III); (2) under the action of a catalyst, carrying out acylation reaction on the intermediate a and stearic anhydride to obtain an intermediate b represented by a formula (IV); and (3) under an acidic condition,carrying out an amino protection group removal reaction on the intermediate b to obtain distearoyl phosphatidylethanolamine represented by a formula (V), wherein R in the formula (III), the formula (IV) and the formula (V) represents an amino protection group. The preparation method is simple to operate, high in product yield and easy for industrial production.
Facile and direct synthesis of symmetrical acid anhydrides using a newly prepared powerful and efficient mixed reagent
Rouhi-Saadabad, Hamed,Akhlaghinia, Batool
, p. 479 - 485 (2015/01/30)
An efficient mixed reagent for direct synthesis of symmetrical carboxylic anhydrides from carboxylic acids has been prepared. Carboxylic acids are converted to anhydrides using triphenylphosphine/ trichloroisocyanuric acid under mild reaction conditions at room temperature. Short reaction time, excellent yields of products, low cost, availability of reagents, simple experimental procedure, and easy work-up of the products are the main advantages of the presented method.
Use of glycerol carbonate in an efficient, one-pot and solvent free synthesis of 1,3-sn-diglycerides
Kargar, Mojgan,Hekmatshoar, Rahim,Ghandi, Mehdi,Mostashari, Abdoljalil
, p. 259 - 264 (2013/07/27)
An efficient solvent-free synthesis of a variety of highly pure 1,3-sn-diglycerides (1,3-sn-diacylglycerols) in a two-step one pot process is described. Heating glycerol carbonate (4-hydroxymethyl-1,3-dioxolan-2-one) with fatty acid anhydrides 2a-d affords 1:1 mixtures of glycerol carbonate fatty esters 3a-3d and the corresponding fatty acids. Further heating the reaction mixtures in the presence of catalytic amounts of 1,4-diazabicyclo[2.2.2]octane (DABCO) at 195-200 °C yields highly pure 1,3-sn-diglycerides 4a-4d.
