WebPinacol Coupling Download Full-text A Stereoselective Synthesis of Fused Carbocycles with a cis-1,2-Diol Moiety by Desymmetrization: SmI2-mediated Pinacol Coupling of meso-Cyclic 1,3-Diones Chemical and Pharmaceutical Bulletin 10.1248/cpb.c21-00837 2024 Author (s): Keita Komine Riki Ninomiya Hayato Fukuda Jun Ishihara Keyword (s): Web3 Apr 2024 · The uniqueness of this reaction using aryl fluorides 1 rather than the conventional aryl halides Ar–X 8a–c (X = Cl, Br, or I) in the silylboronate-mediated cross-coupling was revealed via ...
Samarium(II) iodide solution - Sigma-Aldrich
WebThe SmI 2 -mediated coupling of α-bromoacetonitrile and α-bromopropionitrile with aliphatic ketones and aldehydes produces β-hydroxynitriles in good yields. Reactions typically proceed with little diastereoselectivity, but selectivity enhancement occurs with the addition of tetra-n-hexylammonium bromide. See Full PDF Download PDF Related Papers WebA concise synthesis of 8-azabicyclo [3.2.1]octanes via sequential oxidative Mannich reactions is described. This approach involves an intermolecular oxidative Mannich coupling reaction... brivirac 7 cpr 125 mg nota
Pinacol couplings of a series of aldehydes and ketones with SmI2/Sm/…
Web7 Jun 2013 · We show that [(THF) n I 2 Sm(μ-OCPh 2)] 2 is unlikely to be on the pathway of pinacol coupling due its high energy. Abstract The structure of samarium iodide in THF … Web17 May 2005 · The use of microwave heating in lanthanide ( II) halide (LnX 2 =SmBr 2, SmI 2, and YbI 2) mediated reduction and coupling reactions has been investigated for a variety … WebInvolvement of nucleophilic intermediates in pinacol coupling reaction mediated by transition metals. This result is one of the first evidence that in the case of transition metals, the metal insertion into the carbonyl group can generate an anionic metaloxirane that can attack another carbonyl compound. 3. brivirac cp