A method for preparing [
18
F]fallypride is disclosed, which comprises a first step for trapping a fluorine-18 to a polymer ion exchange cartridge; a second step for extraction of fluorine-18 by inputting low base concentrations: 5.0˜25 μL of 40% TBAHCO
3
or K2.2.2./K
2
CO
3
(5˜25 mg/0.5˜3.0 mg) as a phase-transfer catalyst in a mixture of alcohol/water (1.0/0.2 (v/v)) or alcohol as a solvent into the polymer ion exchange cartridge trapped by the fluorine-18; a third step for preparing a [
18
F]fallypride product by removing the solvent from the trapped fluorine-18, by inputting tosylate precursor in CH
3
CN as a solvent into a reactor and by reacting the same for 5˜35 minutes at 50˜120° C.; and a fourth step for preparing a pure [
18
F]fallypride by purifying the prepared [
18
F]fallypride product.
本发明公开了一种制备[18F]fallypride的方法,包括以下步骤:第一步,将
氟-18捕获到聚合物离子交换柱中;第二步,通过输入低浓度碱基(40%T
BAHCO3或K2.2.2./K2 (5〜25毫克/0.5〜3.0毫克)作为相转移催化剂在
酒精/
水(1.0/0.2(v/v))或
酒精混合溶剂中,从捕获
氟-18的聚合物离子交换柱中提取
氟-18;第三步,通过将tosylate前体在CH3CN中作为溶剂输入到反应器中,并在50〜120°C下反应5〜35分钟,从捕获
氟-18的聚合物离子交换柱中去除溶剂,制备[18F]fallypride产物;第四步,通过纯化制备的[18F]fallypride产物,制备纯净的[18F]fallypride。