96-21-9Relevant articles and documents
Bromotrimethylsilane as a selective reagent for the synthesis of bromohydrins
Giomi, Donatella,Salvini, Antonella,Ceccarelli, Jacopo,Brandi, Alberto
, p. 14453 - 14458 (2021/05/19)
Bromotrimethylsilane (TMSBr) is a very efficient reagent in the solvent-free conversion of glycerol into bromohydrins, useful intermediates in the production of fine chemicals. As glycerol is a relevant by-product in biodiesel production, TMSBr has been also tested as a mediator in transesterification in acidic conditions, providing FAME from castor oil in good yields, along with bromohydrins from glycerol. Subsequently the glycerol conversion was optimized and depending on the reaction conditions, glycerol can be selectively converted into α-monobromohydrin (1-MBH) or α,γ-dibromohydrin (1,3-DBH) in very good yields. This journal is
Preparation method of 3-hydrazino-5-morpholinomethyl-2-oxazolidinone
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Paragraph 0093-0094, (2020/07/12)
The invention provides a preparation method of 3-hydrazino-5-morpholinomethyl-2-oxazolidinone, and belongs to the technical field of chemical synthesis. The preparation method comprises the followingsteps: carrying out a cyclization reaction on 1-Boc protective hydrazine-3-morpholine-2-propanol and a carbonic ester substance to obtain 3-Boc protective hydrazine-5-morpholinomethyl-2-oxazolidinone;and finally hydrolyzing to obtain the AMOZ. The chemical structural formula of the 1-Boc protective hydrazine-3-morpholine-2-propanol is shown in the specification, the chemical structural formula ofthe 3-Boc protective hydrazine-5-morpholinomethyl-2-oxazolidinone is shown in the specification, and the chemical structural formula of the AMOZ is shown in the specification; and the carbonic estersubstance contains at least one of diethyl carbonate, dimethyl carbonate, di-tert-butyl decarbonate, and dipropyl carbonate. The method is simple in synthetic route, the AMOZ is synthesized by adopting a one-pot method, and the catalyst is used in the preparation process, so that the loss in the synthesis process is greatly reduced, the synthesis yield and the recovery rate are relatively high; and the method is suitable for mass production.
For the preparation of intermediate crystallinity of, its synthetic method, intermediate and use thereof
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Paragraph 0048; 0049; 0050, (2017/06/10)
The present invention relates to a novel intermediate for preparation of bruguiesulfurol with II-type diabetes resisting activity, a synthetic method, an intermediate and use thereof, and a bruguiesulfurol preparation method. The bruguiesulfurol preparation method has the advantages of new synthetic route, simple operation, high yield and good safety, is suitable for industrialized production, and can solve the problem that in the prior art the compound only can be prepared form mangrove forest plant extracts by very-low-efficiency extraction and separation.