Process for preparing aminofuranes

A method for preparing a compound of formula (I) and/or salt thereof,

• in which
• R1 is CF3, CF2H, C2F5, CF2Cl, CCl3, COO(C1-C4)alkyl, COOH,
• R2 is H, CH3CO, CCl3CO, CF3CO, phenyl-CO, CH3OCO, (CH3)3COCO, phenyl, phenyl-CH2, (diphenyl)CH,
• Comprising converting a compound of formula (II)
• in which
• R3 and R4 are each independently H and C1-C4-alkyl
• and
• R1 has the definitions specified above,
• with aid of an amine of formula R5-NH2 (V) to a compound of formula (III)
• in which
• R5 is H, phenyl, phenyl-CH2, (diphenyl)CH,
• and then reacting said compound of formula III in presence of a dehydrating reagent to give a compound of formula (I).