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[ CAS No. 18355-96-9 ] {[proInfo.proName]}

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Chemical Structure| 18355-96-9
Chemical Structure| 18355-96-9
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Product Details of [ 18355-96-9 ]

CAS No. :18355-96-9 MDL No. :MFCD00012200
Formula : C23H27BrNP Boiling Point : -
Linear Structure Formula :- InChI Key :SSWPSKSQQSJKKF-UHFFFAOYSA-M
M.W : 428.35 Pubchem ID :15982517
Synonyms :

Safety of [ 18355-96-9 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P261-P305+P351+P338 UN#:N/A
Hazard Statements:H315-H319-H335 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 18355-96-9 ]

* 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 [ 18355-96-9 ]

[ 18355-96-9 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 55453-87-7 ]
  • [ 18355-96-9 ]
  • [ 140462-76-6 ]
YieldReaction ConditionsOperation in experiment
60.6% (1) Add 200g (3-dimethylaminopropyl)triphenylphosphine bromide to the three-necked flask, and then add 400g of anhydrous tetrahydrofuran, turn on the stirring, and control the temperature to 20-22 C.After adding 40 g of NaH, the temperature was raised to reflux after the addition, and the reaction was carried out for 1 h.Then add 100g of isoc acid, stir under reflux for 2 hours, then lower the temperature to 0 ~ 15 , slowly add 30g of anhydrous methanol,Then, 400 g of a 50% mass concentration tetrahydrofuran aqueous solution was added, and finally 1600 g of water was added to quench the reaction.The reaction solution was adjusted to pH 6 ± 0.2 with concentrated hydrochloric acid, and then distilled to dryness under reduced pressure.The solid was dissolved in 1400 g of acetone, stirring was started, 40 g of concentrated hydrochloric acid was added, and a white solid was precipitated.After the dropwise addition was completed, the temperature was lowered to 10 to 15 C and stirred for another 10 hours.Suction filtration to obtain a white solid, dried in an oven to constant weight. The product was crude olopatadine hydrochloride,The purity is 98.67% (Z / E = 98.67: 0.82), the yield is 62.4g, and the yield in this step is 60.6%.
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