ChemicalBook CAS DataBase List 1-Bromooctadecane

1-Bromooctadecane synthesis

10synthesis methods

Product Name:1-Bromooctadecane
CAS Number:112-89-0
Molecular formula:C18H37Br
Molecular Weight:333.39

1-Bromooctadecane is synthesized by the reaction of stearyl alcohol with hydrogen bromide. The alcohol is heated to 100°C, dry hydrogen bromide is introduced, and the reaction temperature is maintained at 100-120°C until the solution no longer absorbs hydrogen bromide. The bromide is layered, the organic phase is washed with concentrated sulfuric acid, the bromide after the acid solution is separated and mixed with an equal volume of 90% methanol, washed with ammonia to make the bromide alkaline, then washed with 90% methanol, and anhydrous Dry calcium chloride. Finally, vacuum distillation, collecting 209-211 ℃ (1.33kPa) fraction is 1-bromooctadecane, and the yield is 90%.

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Yield:-

Steps:

22 N-palmitoyl-S[2(R,S)-palmitoyloxyeisocanyl]-(L)-cysteine

N-palmitoyl-(L)-cysteine is reacted in an analogous manner with 1-bromo-octadecane and N-palmitoyl-S-octadecyl-(L)-cysteine of melting point 90°-92° is thus obtained; [α]_D²⁰ =+13° (c=1.33 chloroform).

References:

US4439425,1984,A

112-92-5 Synthesis

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References

Silane, (1,1-dimethylethyl)dimethyl(octadecyloxy)-

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References

1-Bromooctadecane Related Search:

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