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Chemical Structure| 33719-11-8 Chemical Structure| 33719-11-8

Structure of 33719-11-8

Chemical Structure| 33719-11-8

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Product Details of [ 33719-11-8 ]

CAS No. :33719-11-8
Formula : C22H25BrN2OS
M.W : 445.42
SMILES Code : O=C1N(CC2=CC=CC=C2)[C@@]([C@@](CCC3)([H])[S+]3C4)([H])[C@@]4([H])N1CC5=CC=CC=C5.[Br-]

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Application In Synthesis of [ 33719-11-8 ]

* 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.

  • Downstream synthetic route of [ 33719-11-8 ]

[ 33719-11-8 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 33719-11-8 ]
  • [ 1186-73-8 ]
  • [ 1250271-03-4 ]
YieldReaction ConditionsOperation in experiment
95.3% Put 300 ml methylbenzene and 60% sodium hydride 3.3g (0.0825 mol) into the 500 ml four-neck flask with reflux condenser pipe, dropping pipette, stirrer and thermometric instrument which is protected by dry nitrogen; and then add 15.8g(0.083 mol) methane tricarboxylic acid triethyl ester into the flask at the temperature of below 80C and protected for 2h by heat preservation; add 33.3g (0.075 mol) bromine sulfonium salts into the flask and then raise the temperature and control the temperature of the entire flask at 80C for a 15h reaction; cool it to the normal temperature and use 5% sulfuric acid to adjust the pH to pH=3; separate the organic layer and extract the water layer by 100 ml methylbenzene for two times; use 40 ml 5% sodium bicarbonate water solution wash the organic layer for two times; dry the oil layer by anhydrous sodium sulfate, filtrate and reduce pressure to recycle faint yellow fluid, finally get the target object-0.2g tri-ssterdibanzyl biotin (95.3% of the theoretical value), and the HPLC measured content is 98.0% with no impurity 5 (hereinafter to be referred as dicarboxylic ester).
 

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