Formal Asymmetric Cycloaddition of Activated α,β-Unsaturated Ketones with α-Diazomethylphosphonate Mediated by a Chiral Silver SPINOL Phosphate Catalyst.
Sign Up to like & getrecommendations! Published in 2019 at "Organic letters"
DOI: 10.1021/acs.orglett.8b03436
Abstract: An efficient method for preparing highly functionalized chiral nonspiro-phosphonylpyrazolines via an asymmetric formal 1,3-dipolar cycloaddition reaction of α-diazomethylphosphonate with activated, acyclic α,β-unsaturated ketones, bearing an additional nitrile electron-withdrawing group, has been developed, utilizing an in… read more here.
Keywords: diazomethylphosphonate; cycloaddition; unsaturated ketones; phosphate catalyst ... See more keywords
A bifunctional cerium phosphate catalyst for chemoselective acetalization† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c6sc05642c Click here for additional data file.
Sign Up to like & getrecommendations! Published in 2017 at "Chemical Science"
DOI: 10.1039/c6sc05642c
Abstract: A CePO4 catalyst exhibits high catalytic performance for the chemoselective acetalization of 5-hydroxymethylfurfural with alcohols, in sharp contrast to other homogeneous and heterogeneous acid and/or base catalysts. read more here.
Keywords: cerium phosphate; bifunctional cerium; phosphate catalyst; catalyst ... See more keywords