2-Propoxybenzamide → Ethyl 2-n-propoxybenzimidate fluoroborate
Reaktionsgleichung
[F:1][B-:2]([F:5])([F:4])[F:3].[CH2:6]([O+](CC)CC)[CH3:7].[CH2:13]([O:16][C:17]1[CH:25]=[CH:24][CH:23]=[CH:22][C:18]=1[C:19]([NH2:21])=[O:20])[CH2:14][CH3:15]>C(Cl)Cl>[F:1][B-:2]([F:5])([F:4])[F:3].[CH2:13]([O:16][C:17]1[CH:25]=[CH:24][CH:23]=[CH:22][C:18]=1[C:19](=[NH:21])[O:20][CH2:6][CH3:7])[CH2:14][CH3:15]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of triethyloxonium fluoroborate (33.0 g., 0.175 mole) in methylene chloride (75 ml.) was added during 10 minutes to a stirred solution of 2-n-propoxybenzamide (31.3 g., 0.175 mole) in methylene chloride (150 ml.). The solution was stirred for an additional 18 hours at room temperature. The solution was concentrated to about one-fifth volume and was diluted with diethyl ether to precipitate the ethyl 2-n-propoxybenzimidate fluoroborate (44.0 g., 85% yield), m.p. 108°-112°.