Optical studies on coumarins. II. Ultraviolet absorption of monohydroxycoumarins and derivatives was written by Bohme, Horst;Severin, Theodor. And the article was included in Archiv der Pharmazie und Berichte der Deutschen Pharmazeutischen Gesellschaft in 1957.Application In Synthesis of 3-(2,4-Dimethoxyphenyl)acrylic acid This article mentions the following:
In comparative studies of 4 monohydroxycoumarins, the longwave absorption bands were found to be moved bathochromically by introduction of a hydroxy group in the 6 or 7 position, while the corresponding maximum of 5-and 8-hydroxycoumarins lies at shorter wave lengths. As with coumarin itself 3 bands appear with 5-, 6-, and 8-hydroxycoumarin. 7-Hydroxycoumarin does not produce the medial bands with an inflection at 240 m娓? Dihydroxy-trans-cinnamic acids are optically very similar to their methylated derivatives, but big differences were noted between hydroxycoumarins and dimethoxy-cis-cinnamic acids. In the experiment, the researchers used many compounds, for example, 3-(2,4-Dimethoxyphenyl)acrylic acid (cas: 6972-61-8Application In Synthesis of 3-(2,4-Dimethoxyphenyl)acrylic acid).
3-(2,4-Dimethoxyphenyl)acrylic acid (cas: 6972-61-8) belongs to ethers. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides.Application In Synthesis of 3-(2,4-Dimethoxyphenyl)acrylic acid
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem