The author of 《Asymmetric synthesis of functionalized phenylalanine derivatives via Rh-catalyzed conjugate addition and enantioselective protonation cascade》 were Jian, Jia-Hong; Zeng, Hao-Wei; Kuo, Ting-Shen; Wu, Ping-Yu; Wu, Hsyueh-Liang. And the article was published in Organic Letters in 2019. Quality Control of 3-Methoxyphenylboronic acid The author mentioned the following in the article:
The asym. conjugate addition of arylboronic acids to N-phthalimidodehydroalanine 1i catalyzed by Rh(I)/L1a enables the facile preparation of chiral functionalized phenylalanines. The reaction proceeds by a conjugate addition and enantioselective protonation cascade, affording a rhodium enolate that undergoes re-face protonation. The reaction tolerates various arylboronic acids and can be used in the gram-scale synthesis of (S)-phenylalanine hydrochloride, demonstrating the reaction scope and the synthetic feasibility of the process. In the experiment, the researchers used many compounds, for example, 3-Methoxyphenylboronic acid(cas: 10365-98-7Quality Control of 3-Methoxyphenylboronic acid)
3-Methoxyphenylboronic acid(cas: 10365-98-7) belongs to boronic acids. Boronic acids are mild Lewis acids which are generally stable and easy to handle, making them important to organic synthesis.Quality Control of 3-Methoxyphenylboronic acid
Referemce:
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