CN112625015A - 一种2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮化合物的制备方法 - Google Patents

一种2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮化合物的制备方法 Download PDF

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CN112625015A
CN112625015A CN202110078850.3A CN202110078850A CN112625015A CN 112625015 A CN112625015 A CN 112625015A CN 202110078850 A CN202110078850 A CN 202110078850A CN 112625015 A CN112625015 A CN 112625015A
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acetophenone
isobenzofuran
dihydro
metal complex
complex catalyst
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CN112625015B (zh
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刘娥
姚明
王洪林
张华新
李立威
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Jingchu University of Technology
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    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
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    • B01J2531/84Metals of the iron group
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Abstract

一种2‑(1,3‑二氢‑2‑异苯并呋喃)‑1‑苯乙酮化合物的制备方法,其化学结构式为:

Description

一种2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮化合物的制备 方法
技术领域
本发明属于药物中间体合成领域,涉及到一种2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮化合物的制备方法。
背景技术
异苯并呋喃及其衍生物是一类重要的杂环化合物,广泛存在于自然界中,显示出良好的生物特性及药理活性,如抗肿瘤,抗抑郁症、抗结核病等方面,同时在染料和超分子领域也有着广泛的应用,是非常有用的有机合成中间体,在化工与医药领域的应用研究颇为活跃, 而且很多已经用于实际生产.因此, 异苯并呋喃及其衍生物已成为医药和高分子化学的研究热点。
化合物2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮是合成异苯并呋喃及其衍生物的重要中间体,目前对于该中间体的合成,大多采用了较贵的原料,或是反应条件较为苛刻,或是收率低,同时,对环境不友好,极大地限制了它们在工业上的应用。因此,需要开发一种原料易得,反应条件温和,操作简便的合成方法。本发明报道了一种2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮的新的合成方法。
发明内容
本发明目的在于提供操作简便、反应温和、成本低、收率高的催化合成2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮的方法。
钴金属配合物催化合成2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮化合物的反应式为:
Figure DEST_PATH_IMAGE002
其制备方法包括以下步骤:
A、制备钴金属配合物催化剂,室温条件下,将4′-氟苯基-2,2′:6′,2′′-三联吡啶(10 mmol)溶于四氢呋喃(20mL)中、在氮气下加入CoCl2 (10 mmol),搅拌过夜,过滤,得到固体用无水乙醇冲洗,干燥,得钴金属配合物催化剂。
B、合成2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮,钴金属配合物催化剂和叔丁醇钾在室温下溶解于溶剂中,再加入邻苯二甲醇和苯乙酮,然后回流反应,反应结束后,去除溶剂,纯化,即得到2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮。
步骤B中所述钴金属配合物催化剂、叔丁醇钾、邻苯二甲醇和苯乙酮的投料摩尔比是1:5:25:20。
步骤B中所述溶剂可以为甲苯、二甲苯、N,N-二甲基甲酰胺-水(DMF-H2O)中任意一种或几种混合,其中优选甲苯。
步骤B中回流反应时间为24h。
步骤B的反应在空气中进行。
本发明的优点:利用钴配合物催化合成2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮。制备方法简便、价格较低、收率高,可进行大批量合成,适合工业生产应用。应用广泛,可用于制备多种药物中间体。
具体实施方式
以下将对发明的优选实例进行详细描述。所举实例是为了更好地对发明内容进行阐述,并不是发明内容仅限于实例。根据发明内容对实施方案的非本质的改进和调整,仍属于发明范畴。
一种2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮化合物的制备方法,包括:先制备一种钴金属配合物催化剂,将 4′-氟苯基-2,2′:6′,2′′-三联吡啶(10 mmol)溶于四氢呋喃(20 mL)中、在氮气下加入CoCl2 (10 mmol),搅拌过夜,过滤,得到固体用无水乙醇冲洗,干燥,得钴金属配合物催化剂,后用该催化剂催化得到2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮。
下面结合具体实施例对本发明作进一步说明。
本发明实施例中的钴配合物催化剂催化得到2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮,反应式如下:
Figure 573788DEST_PATH_IMAGE002
实施例1:钴配合物催化剂的制备
室温条件下,将4′-氟苯基-2,2′:6′,2′′-三联吡啶(10 mmol)溶解于四氢呋喃(20mL)中,氮气保护下加入氯化钴(10 mmol)。混合溶液搅拌过夜后,过滤,所得固体用无水乙醇洗涤三次后,干燥,即得钴金属配合物催化剂。产率: 84.6%。
实施例2:2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮的合成
钴金属配合物催化剂(2 mmol)和叔丁醇钾(10mmol,1.12g)在室温下溶解于30mL甲苯中,再加入邻苯二甲醇(50 mmol,6.9g)和苯乙酮(40 mmol,4.8g),然后回流反应24h,反应结束后,冷却至室温,去除溶剂。所得混合物通过柱色谱法分离得纯品,即得到2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮。产率为78.2%,表征数据:1 H NMR (400 MHz, CDCl3 ) δ:7.99 (d, 2H), 7.57 (t, 1H), 7.47 (dd, 2H), 7.35 –7.15 (m, 4H), 5.91 (dd, 1H),5.11 (dd, 1H), 5.06 (d, 1H), 3.54 (dd, 1H), 3.37 (dd, 1H) ppm.
13CNMR (100MHz,CDCl3)δ:197.68,141.31,139.11,136.93, 133.12, 128.47,128.15,127.63, 127.32, 121.36, 120.88, 79.97, 72.48, 45.46 ppm。

Claims (5)

1.一种2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮化合物的制备方法,其特征在于包括以下步骤:
A、制备钴金属配合物催化剂:室温条件下,将4′-氟苯基-2,2′:6′,2′′-三联吡啶溶解于四氢呋喃中,氮气保护下加入氯化钴,搅拌后过滤,所得固体用无水乙醇洗涤后干燥,收集固体,得钴金属配合物催化剂;
B、合成2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮:钴金属配合物催化剂和叔丁醇钾在室温下溶于溶剂中,再加入邻苯二甲醇和苯乙酮,然后回流反应,去除溶剂,纯化,即得到2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮。
2.根据权利要求1所述的一种2-(1,3-二氢-2-异苯并呋喃)-1-苯乙酮化合物的制备方法,其特征在于步骤B中所述钴金属配合物催化剂、叔丁醇钾、邻苯二甲醇和苯乙酮的投料摩尔比是1: 5: 25:20。
3.根据权利要求1所述的一种邻苯二甲醇化合物的制备方法,其特征在于步骤B中所述溶剂为甲苯、二甲苯、N,N-二甲基甲酰胺-水中任意一种或几种混合。
4.根据权利要求1所述的一种邻苯二甲醇化合物的制备方法,其特征在于步骤B中所述溶剂为甲苯。
5.根据权利要求1所述的一种邻苯二甲醇化合物的制备方法,其特征在于步骤B中回流反应时间为24h。
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