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CAS No. : | 1530-32-1 | MDL No. : | MFCD00011838 |
Formula : | C20H20BrP | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | JHYNXXDQQHTCHJ-UHFFFAOYSA-M |
M.W : | 371.25 | Pubchem ID : | 73727 |
Synonyms : |
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Signal Word: | Danger | Class: | 6.1 |
Precautionary Statements: | P501-P273-P270-P264-P280-P391-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P310+P330-P302+P352+P312-P405 | UN#: | 2811 |
Hazard Statements: | H301-H312-H315-H319-H411 | Packing Group: | Ⅲ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1.81 g | Ethyl 21b (5.60g) of THF (25.2 ml) suspension, round the leucorrhea the, 2.69 Mn-butyl lithium-hexane solution (7.0 ml) adding an, 30 minutes in the round the leucorrhea stirring section. Reaction solution at a, process obtained in a 4 (S)-tert-butyl 2,2-dimethyl-4 - (2-oxo ethyl) oxazolidine-3-carboxylate (3.06g) THF (3.06 ml) of solution, are added to the round the leucorrhea, adaptation stirring time 14 at room temperature. Adding of cyclohexane to reaction solution at a, know one filtration insoluble, = 2/1-hexanediol THF a washing of section. Filtrate of decompressing concentrated within, obtained residue silica gel chromatography (developing solvent: hexane/acetic acid ethyl) for purifying the, title compound 1.81g is obtained. | |
1.81 g | A 2.69 M n-butyllithium-hexane solution (7.0 ml) was added to a suspension of ethyltriphenylphosphonium bromide (5.60 g) in THF (25.2 ml) under ice-cooling, and the mixture was stirred for 30 minutes under ice-cooling. A solution of the <strong>[147959-19-1](S)-tert-butyl 2,2-dimethyl-4-(2-oxoethyl)oxazolidine-3-carboxylate</strong> (3.06 g) obtained in Step 4 in THF (3.06 ml) was added to the reaction mixture under ice-cooling, and the mixture was stirred for 14 hours at room temperature. Hexane was added to the reaction mixture, and the insoluble matter was filtered off, followed by washing with THF-hexane=2/1. The filtrate was concentrated under reduced pressure. The resulting residue was purified by silica gel chromatography (developing solvent: hexane/ethyl acetate), thereby obtaining the title compound (1.81 g). |