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- W1915516056 abstract "[877773-30-3] C19H21N3 (MW 291.39)InChI = 1S/C19H21N3/c1-3-7-15(8-4-1)11-17-13-22-14-18(21-19(22)20-17)12-16-9-5-2-6-10-16/h1-10,17-18H,11-14H2,(H,20,21)/t17-,18-/m0/s1InChIKey = WPGKFCUFRDEVPU-ROUUACIJSA-N(highly enantioselective catalyst for the base-catalyzed reactions of anthrones)Physical Data: (pale yellow oil) (c 1.0, CHCl3).Solubility: soluble in organic solvents such as CH2Cl2, toluene, ethyl acetate, and THF.Analysis of Reagent Purity: 1H NMR in CDCl3, 13C NMR in CDCl3,2 and IR.2Form Supplied in: not commercially available.Preparative Methods: prepared from (S)-phenylalaninol in five steps (eq 1).2 This method was also used to prepare several other chiral bicyclic guanidines. The catalyst was prepared as the guanidinium iodide. Before use the catalyst is basified with K2CO3: the guanidinium salt was dissolved in CH2Cl2 and loaded onto a column packed with solid K2CO3 from which the free base was eluted with CH2Cl2. (1)Purification: silica gel chromatography.Handling, Storage, and Precautions: the reagent is stable as both the free base or the guanidinium salt. Both forms are typically stored under nitrogen at 0 °C." @default.
- W1915516056 created "2016-06-24" @default.
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- W1915516056 date "2008-09-15" @default.
- W1915516056 modified "2023-09-24" @default.
- W1915516056 title "2,3,5,6-Tetrahydro-2,6-bis(phenylmethyl)-1H-imidazo[1,2-a]imidazole" @default.
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- W1915516056 doi "https://doi.org/10.1002/047084289x.rn00967" @default.
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