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• 4248-19-5 tert-butyl carbazate 
• 384365-49-5 methyl 2-diazo-2-(3-methoxyphenyl)acetate 

Relevant academic research and scientific papers

Asymmetric Ni-H insertion reaction cooperatively catalyzed by rhodium and chiral spiro phosphoric acids

So near so SPA: Achiral dirhodium(II) carboxylates and chiral spiro phosphoric acids (SPA) cooperatively catalyzed asymmetric Ni-H insertion reactions with high enantioselectivity, high yields, and fast reaction rates at low catalyst loading (see scheme;