- PROCESS FOR PREPARING SYNTHETIC PARA-EUGENOL
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Processes are provided for preparing synthetic para-eugenol and polysiloxane- polycarbonate copolymers including the synthetic para-eugenol. In an embodiment, a process for synthesizing para-eugenol can comprise: a) hydrolyzing methyl 5-allyl-3- methoxysalicylate to form 5-allyl-3-methoxysalicylic acid; b) decarboxylating the 5-allyl-3- methoxysalicylic acid to form a product comprising para-eugenol. The polysiloxane- polycarbonate copolymer prepared by the process may be isolated by, for example, anti- solvent precipitation followed by vacuum drying.
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Paragraph 0134
(2015/02/25)
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- DYE COMPOUND AND COLORED CURABLE RESIN COMPOSITION
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The present invention relates to a dye compound consisting of a dye positive ion and a negative ion with at least two reactive groups where a dye compound is provided for a color filter with an outstanding heat resistance. For this, in the present inventi
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Paragraph 0359-0360
(2016/11/17)
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- Regioselective ortho-carboxylation of phenols catalyzed by benzoic acid decarboxylases: A biocatalytic equivalent to the Kolbe-Schmitt reaction
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The enzyme catalyzed carboxylation of electron-rich phenol derivatives employing recombinant benzoic acid decarboxylases at the expense of bicarbonate as CO2 source is reported. In contrast to the classic Kolbe-Schmitt reaction, the biocatalytic equivalent proceeded in a highly regioselective fashion exclusively at the ortho-position of the phenolic directing group in up to 80% conversion. Several enzymes were identified, which displayed a remarkably broad substrate scope encompassing alkyl, alkoxy, halo and amino- functionalities. Based on the crystal structure and molecular docking simulations, a mechanistic proposal for 2,6-dihydroxybenzoic acid decarboxylase is presented.
- Wuensch, Christiane,Gross, Johannes,Steinkellner, Georg,Lyskowski, Andrzej,Gruber, Karl,Glueck, Silvia M.,Faber, Kurt
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p. 9673 - 9679
(2014/03/21)
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