Niobium- and zirconium-catalyzed reactions of substituted 2 alkynylamines with Et2Zn
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DOI: 10.1039/d0ra10132j
Abstract: The NbCl5–EtMgBr-catalyzed reaction of N,N-disubstituted 2-alkynylamines with Et2Zn followed by hydrolysis or deuterolysis affords (2Z)-alkenylamines (reduction products of alkyne) in high yields. The reaction of N,N-disubstituted 2-alkynylamines with Et2Zn catalyzed by the Cp2ZrCl2–EtMgBr system occurs… read more here.
Keywords: substituted alkynylamines; zirconium catalyzed; catalyzed reactions; reactions substituted ... See more keywords
Zirconium-catalyzed asymmetric Kabachnik–Fields reactions of aromatic and aliphatic aldehydes
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DOI: 10.1039/d1sc03222d
Abstract: An effective catalyst has been developed for the three-component reaction of aldehydes, anilines and phosphites in an asymmetric catalytic Kabachnik–Fields reaction to give α-aminophosphonates. A catalyst was sought that would give high asymmetric inductions for… read more here.
Keywords: kabachnik fields; zirconium catalyzed; catalyst; aliphatic aldehydes ... See more keywords