SDS of cas: 98-97-5. In 2019 J AM CHEM SOC published article about TERTIARY BORONIC ESTERS; AMINOBORONIC ACID-DERIVATIVES; ASYMMETRIC HYDROBORATION; PINACOLBORYL ADDITION; AMINOBORATION; ALKENES; SECONDARY; HYDROFUNCTIONALIZATION; HYDROALKYNYLATION; BORYLATION in [Bai, Xiao-Yan; Zhao, Wei; Sun, Xin; Li, Bi-Jie] Tsinghua Univ, Dept Chem, CBMS, Beijing 100084, Peoples R China in 2019, Cited 89. The Name is Pyrazine-2-carboxylic acid. Through research, I have a further understanding and discovery of 98-97-5.
Chiral alpha- and beta-aminoboronic acids exhibit unique biological activities. General methods for the synthesis of these bioisosteres of amino acids are highly desirable. We report a facile preparation of these compounds through rhodium-catalyzed regiodivergent and enantioselective hydroboration of enamides. Catalytic asymmetric synthesis of alpha- and beta-aminoboronic esters with high regio-, diastereo-, and enantioselectivities were achieved through effective catalyst control and tuning substrate geometry. Starting from easily available materials, this strategy provides a unified synthetic access to both enantioenriched alpha-boration and beta-boration products. The synthetic utility of these methods was demonstrated by efficient synthesis of an anticancer drug molecule and diverse transformations of the boration products.
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Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem