The combined organic layers were washed with saturated NaHCO3-solution, then with water and dried with Na2SO4. The 2-phenylchroman-6-ol was purified by column chromatography using heptane-ethyl acetate (2:1) as an eluant. 1H NMR (400 MHz, d6-DMSO) δ: 8.78 (s, 1H), 7.43-7.31 (m...
These variant forms result from the ways in which the atoms bond together, and can have different properties. Consider that diamond, graphite, fullerenes, and carbon nanotubes are all allotropes of the element carbon. They each have unique structures, properties, and uses....
a. 1.0 m methanol (CH_3OH) b. 0.2 m HCl c. 0.2 m Koh When the following compound reacts with H^+ ion, what is the primary product formed? What are the spectator ions when Co(OH)3 reacts with H2SO4? Hydronium ion, H3O+, reacts with ...
The mixture was washed with saturated aqueous NaHCO3 and brine, dried (MgSO4) and evaporated. Flash chromatography of the residue over silica gel (1.5 × 30 cm), using 0–20% EtOAc–hexane containing Et3N (ca. 3 drops per 100 mL) (gradient elution), gave 27 (77.3 mg, 91%) as a ...
KF. e. FeCl_3. Determine whether each compound is more soluble in an acidic solution than in a neutral solution. (a). BaF2 (b). Agl (c). Ca(OH)2 Which of these salts would hydrolyze to produce an acidic aqueous solution, and why? a....
Met4 reacts with an epitope in the extracellular 25 to 567 amino acids of the Met receptor protein41. The Met4 binding site is sensitive to denaturation by boiling in SDS sample buffer, but is reestablished by either heat retrieval or formalin fixation (FIG. 2). The same heat retrieval ...
1. A compound of the formula I or II 8 where X can be S, O and NH, and R1 is hydrogen, chlorine, fluorine, bromine, iodine, branched or unbranched C1-C6-alkyl, OH, CF3, CN, NR11R12 or NH—CO—R13, with R11 and R12, independently of each other, being hydrogen or C1-C4-al...