Synthesis and Structural Aspects of N-Triflylphosphoramides and Their Calcium Salts-Highly Acidic and Effective Bronsted Acids was written by Rueping, Magnus;Nachtsheim, Boris J.;Koenigs, Rene M.;Ieawsuwan, Winai. And the article was included in Chemistry – A European Journal in 2010.Reference of 851615-07-1 The following contents are mentioned in the article:
Recently, 1,1′-bi-2-naphthol (BINOL)-based N-triflylphosphoramides emerged as a new class of potent Bronsted acid catalysts. In this paper we describe the efficient synthesis of various BINOL-based N-triflylphosphoramides, e.g. I [Ar = 1-naphthyl, 2-naphthyl, Ph, etc.], and their calcium salts. Furthermore, X-ray crystal structure anal. combined with energy-dispersive X-ray spectroscopy (EDX) measurements confirmed that the synthesized chiral N-triflylphosphoramides are highly acidic metal-free catalysts. This study involved multiple reactions and reactants, such as (R)-[1,3′:1′,1”:3”,1”’-Quaternaphthalene]-2′,2”-diol (cas: 851615-07-1Reference of 851615-07-1).
(R)-[1,3′:1′,1”:3”,1”’-Quaternaphthalene]-2′,2”-diol (cas: 851615-07-1) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Reference of 851615-07-1
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