CN106478492B - 一种5-芳磺酰基-2-氯苯酚类化合物的制备方法 - Google Patents

一种5-芳磺酰基-2-氯苯酚类化合物的制备方法 Download PDF

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CN106478492B
CN106478492B CN201610859419.1A CN201610859419A CN106478492B CN 106478492 B CN106478492 B CN 106478492B CN 201610859419 A CN201610859419 A CN 201610859419A CN 106478492 B CN106478492 B CN 106478492B
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chlorophenoxies
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CN106478492A (zh
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李刚
杨素玲
赵丰
吕允贺
王亚
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Anyang Normal University
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    • C07D213/00Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
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Abstract

一种5‑芳磺酰基‑2‑氯苯酚类化合物的制备方法,采用2‑(5‑芳磺酰基‑2‑氯苯氧基)吡啶类化合物为原料制备,通过以下步骤制备:A:将2‑(5‑芳磺酰基‑2‑氯苯氧基)吡啶类化合物、三氟甲磺酸甲酯及甲苯直接加入反应装置中,在100 oC搅拌反应24小时后,分离粗产物;B:将步骤A得到的粗产物加入甲醇中,并加入钠,回流15分钟,分离得到5‑芳磺酰基‑2‑氯苯酚类化合物。本发明的制备方法简单,反应条件温和,一步完成,能够很好的应用于5‑芳磺酰基‑2‑氯苯酚类化合物的制备中。

Description

一种5-芳磺酰基-2-氯苯酚类化合物的制备方法
技术领域
本发明涉及一种5-芳磺酰基-2-氯苯酚类化合物的制备方法,属于化学领域。
背景技术
5-芳磺酰基-2-氯苯酚类化合物是一类重要结构单元,广泛应用于药物、农药及天然产物等的合成中。其制备时采用传统的芳香化合物亲电取代很难合成,取代基不但需要逐步引入,而且有的不符合定位规则,反应副产物较多。
发明内容
本发明的目的为克服传统5-芳磺酰基-2-氯苯酚类化合物难于合成的问题,提供一种5-芳磺酰基-2-氯苯酚类化合物的制备方法。
为实现本发明的目的,采用了下述的技术方案:一种5-芳磺酰基-2-氯苯酚类化合物的制备方法,所述5-芳磺酰基-2-氯苯酚类化合物为式II的结构,采用结构为式Ⅰ所示的2-(5-芳磺酰基-2-氯苯氧基)吡啶类化合物为原料制备,转化式如下:
上式中R为甲基或苯基或甲氧基;Ar为以下两种,一是萘基或苯基;二是带有硝基或甲氧基或甲基或三氟甲基或乙酰基或氯或溴的苯基;
所述的制备方法通过以下步骤制备:
A:将2-(5-芳磺酰基-2-氯苯氧基)吡啶类化合物、三氟甲磺酸甲酯及甲苯直接加入反应装置中,在100 oC搅拌反应24小时后,分离粗产物;
B:将步骤A得到的粗产物加入甲醇中,并加入钠,回流15分钟,分离得到5-芳磺酰基-2-氯苯酚类化合物,进一步的,所述的2-(5-芳磺酰基-2-氯苯氧基)吡啶类化合物与三氟甲磺酸甲酯摩尔用量为1:2,加入钠的摩尔数为(5-芳磺酰基-2-氯苯氧基)吡啶类化合物摩尔数的0.014-0.015倍。
本发明的积极有益技术效果在于:本发明的制备方法简单,反应条件温和,一步完成,能够很好的应用于5-芳磺酰基-2-氯苯酚类化合物的制备中。
具体实施方式
为了更充分的解释本发明的实施,提供本发明的实施实例,这些实施实例仅仅是对本发明的阐述,不限制本发明的范围。在本发明的转化式中,R没有写在苯环上的一个具体位上,写在了两个C键的中间,这表示的是:R可以在上式中的没有示出连接原子的其它三个位中的任意一个位上,即可在上式中苯环上的3、4、6位的任意位上。
作为本发明中的原料,式Ⅰ所示的2-(5-芳磺酰基-2-氯苯氧基)吡啶类化合物可以采用2-苯氧基吡啶类化合物与芳基磺酰氯反应得到,反应式如下:
反应时,将2-苯氧基吡啶类化合物、芳基磺酰氯、催化剂二氯双(4-甲基异丙基苯基)钌以及溶剂二甲苯或甲苯直接加入反应装置中,在氮气下反应,搅拌加热温度至100℃-130℃,反应24小时,分离产物得到2-(2-氯-5磺酰基)苯氧基吡啶化合物。
实施例1:
在反应管中加入2-(5-对甲苯磺酰基-2-氯苯氧基)吡啶359mg(1 mmol),三氟甲磺酸甲酯328mg(2 mmol), 甲苯10 mL,氮气条件下,100 oC搅拌24小时,反应后,分离粗产物,接着加入反应管中,加金属钠(15mmol)和甲醇(15mL),回流15分钟后,冷却,柱色谱分离,得目标产物5-对甲苯磺酰基-2-氯苯酚,产率为74%。
实施例2:
在反应管中加入2-(5-苯磺酰基-2-氯苯氧基)吡啶345mg(1 mmol),三氟甲磺酸甲酯328mg(2 mmol), 甲苯10 mL,氮气条件下,100 oC搅拌24小时,反应后,分离粗产物,接着加入反应管中,加金属钠(15mmol)和甲醇(15mL),回流15分钟后,冷却,柱色谱分离,得目标产物5-苯磺酰基-2-氯苯酚,产率为73%。
实施例3:
在反应管中加入2-(5-(2-萘磺酰基)-2-氯苯氧基)吡啶395mg(1 mmol),三氟甲磺酸甲酯328mg(2 mmol), 甲苯10 mL,氮气条件下,100 oC搅拌24小时,反应后,分离粗产物,接着加入反应管中,加金属钠(15mmol)和甲醇(15mL),回流15分钟后,冷却,柱色谱分离,得目标产物5-(2-萘磺酰基)-2-氯苯酚,产率为77%。
下表为采用本发明的技术方案合成的产物及对应的产率:
注:表中p-tosyl为对甲苯磺酰基。
在详细说明本发明的实施方式之后,熟悉该项技术的人士可清楚地了解,在不脱离上述申请专利范围与精神下可进行各种变化与修改,凡依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均属于本发明技术方案的范围,且本发明亦不受限于说明书中所举实例的实施方式。

Claims (2)

1.一种5-芳磺酰基-2-氯苯酚类化合物的制备方法,所述5-芳磺酰基-2-氯苯酚类化合物为式II的结构,其特征在于:采用结构为式Ⅰ所示的2-(5-芳磺酰基-2-氯苯氧基)吡啶类化合物为原料制备,转化式如下:
所述的制备方法通过以下步骤制备:
A:将2-(5-芳磺酰基-2-氯苯氧基)吡啶类化合物、三氟甲磺酸甲酯及甲苯直接加入反应装置中,在100 oC搅拌反应24小时后,分离粗产物;
B:将步骤A得到的粗产物加入甲醇中,并加入钠,回流15分钟,分离得到5-芳磺酰基-2-氯苯酚类化合物;
式Ⅰ所示的2-(5-芳磺酰基-2-氯苯氧基)吡啶类化合物采用2-苯氧基吡啶类化合物与芳基磺酰氯反应得到,反应式如下:
反应时,将2-苯氧基吡啶类化合物、芳基磺酰氯、催化剂二氯双(4-甲基异丙基苯基)钌以及溶剂二甲苯或甲苯直接加入反应装置中,在氮气下反应,搅拌加热温度至100℃-130℃,反应24小时,分离产物得到2-(5-芳磺酰基-2-氯苯氧基)吡啶类化合物,上式中R为甲基或苯基或甲氧基;Ar为以下两种之一,一是萘基或苯基;二是带有硝基或甲氧基或甲基或三氟甲基或乙酰基或氯或溴的苯基。
2.根据权利要求1所述的一种5-芳磺酰基-2-氯苯酚类化合物的制备方法,其特征在于:所述的2-(5-芳磺酰基-2-氯苯氧基)吡啶类化合物与三氟甲磺酸甲酯摩尔用量为1:2,加入钠的摩尔数为2-(5-芳磺酰基-2-氯苯氧基)吡啶类化合物摩尔数的0.014-0.015倍。
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