ChemicalBook CAS DataBase List Octocrylene

Octocrylene synthesis

4synthesis methods

Product Name:Octocrylene
CAS Number:6197-30-4
Molecular formula:C24H27NO2
Molecular Weight:361.48

104-76-7 Synthesis

104-76-7
666 suppliers
$5.00/10g

5232-99-5 Synthesis

5232-99-5
294 suppliers
$6.00/10g

6197-30-4
433 suppliers
$5.00/250mg

Yield:6197-30-4 99.8%

Reaction Conditions:

in sodium carbonate;

Steps:

1 Preparation of 2-ethylhexyl 2-cyano-3,3-diphenylacrylate STR6

EXAMPLE 1 Preparation of 2-ethylhexyl 2-cyano-3,3-diphenylacrylate STR6 138.5 g (0.5 mole) of ethyl 2-cyano-3,3-diphenylacrylate and 196 g (1.5 mole) of 2-ethylhexanol were caused to react at 130° C. in the presence of 5 g (0.05 mole) of sodium carbonate, the ethanol formed being removed by distillation assisted by a stream of nitrogen (approx. 22 l/h). The transesterification reaction was complete after about one hour, and the solution was filtered from the sodium carbonate while still hot. The purity of the thus obtained 2-ethylhexyl 2-cyano-3,3-diphenylacrylate was already very high at this stage. Purification by film evaporation provided the ester in the form of a light-yellow oil in 97% yield and having a purity of 99.8% as determined by gas-chromatographic analysis. The same results were obtained using, as base, calcium carbonate or magnesium oxide for a reaction period of from 2 to 3 hours.

References:

US5047571,1991,A

119-61-9 Synthesis