Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 39648-67-4, C20H13O4P. A document type is Article, introducing its new discovery., Recommanded Product: 39648-67-4
A highly diastereo- and enantioselective four-component reaction of a diazo ketone with two molecules of anilines and ethyl glyoxylate was achieved under Rh2(OAc)4 and chiral phosphoric acid cocatalyzed conditions. This transformation proceeds through a Mannich-type trapping of the ammonium ylide generated from metal carbene and one molecule of aniline with iminoester derived from another molecule of aniline and ethyl glyoxylate. With this method, a series of chiral alpha,beta-diamino acid derivatives were efficiently constructed in good yields and with good to excellent diastereo- and enantioselectivities. Georg Thieme Verlag Stuttgart New York.
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