MAGNESIUM SILICATE (synthetic) → HCID 14390461, compound

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Reaction Steps

N-[3-(benzoylamino)-2-pyridinyl]glycine ethyl ester, 10.32 g (0.034 mole) in two divided portions was heated in glass in a Wood's metal bath at 190° C. under a flow of nitrogen, one portion for 15 min and the other for 7 min. The green glassy residues were dissolved in methylene chloride, combined, and stirred together with 90 g of Florisil® for 1 hr. The mixture was filtered, and the filtrate evaporated to an oil, which crystallized. The solid was recrystallized from hexanes to give a crystalline solid, which was dried under high vacuum at room temperature overnight to give 3.67 g (39%) of crystals, m.p. 93°-95° C.

Provenance & Evidence