CN113149871A - 一种一步原位催化反应生成对称磺酸基1,1ˊ-联萘酚绿色合成方法 - Google Patents

一种一步原位催化反应生成对称磺酸基1,1ˊ-联萘酚绿色合成方法 Download PDF

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CN113149871A
CN113149871A CN202110222242.5A CN202110222242A CN113149871A CN 113149871 A CN113149871 A CN 113149871A CN 202110222242 A CN202110222242 A CN 202110222242A CN 113149871 A CN113149871 A CN 113149871A
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王莹
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Abstract

本发明涉及有机合成和绿色化学领域,具体是一种原位催化合成联萘酚衍生物的合成方法。步骤包括:0.1mmolCu(NO3)2,0.1mmol邻菲罗啉,0.1mmol原料2,7‑二萘酚‑3,6‑二磺酸钠溶入10mL去离子水中,室温搅拌1h,然后将上述溶液80℃加热回流3h,冷却至室温并过滤,放置3d后得到蓝色块状晶体。与现有技术相比,本发明具有以下优点:可以一步原位催化形成对称的磺基化的1,1ˊ‑联萘酚。不需要后修饰,增加磺酸基官能团。反应物是带有磺酸基团的钠盐,不用有机溶剂溶解。不需要将磺酸基进行酯化保护官能团,直接反应得到目标产物;使用的溶剂为水,绿色环保;Cu‑phen配合物具有催化活性;一步原位催化反应实现了对称的磺酸基1,1ˊ‑联萘酚的合成。

Description

一种一步原位催化反应生成对称磺酸基1,1ˊ-联萘酚绿色合 成方法
技术领域
本发明涉及有机合成领域和绿色化学领域,具体是一种原位催化合成联萘酚衍生物的合成方法。
背景技术
现有技术中联萘酚衍生物合成方法有多种。
第一,常规合成需要使用有机溶剂,包括THF,四氯甲烷,氯仿以及二氯甲烷等。缺点是溶剂污染环境,需要回收溶剂进行无害化处理等;
第二,反应物的原料萘酚衍生物均不带含氧酸基团,即使带含氧酸根基团,也需要进行酯化进行基团保护或进行烷基化进行封端(如下图所示);
Figure BDA0002955105410000011
R1,R2,R3=H,氨基,烷基,芳香基,烷氧基,芳香氧基,酯基,卤素,羰基有机化合物(如:甲氧羰基),羟甲基衍生物(如:CPh2(OH))等
第三,如果使用不带磺酸基团的萘酚衍生物为原料,需要催化反应后,再进行磺基化反增加磺酸基团。即对产物联萘酚衍生物进行磺酸化修饰(R1,R2,R3位置上),还需要额外一步或几步骤反应对联萘酚衍生物进行修饰,用以添加磺酸基官能团;
第四,如果使用带有磺酸基团的萘酚衍生物为原料,即原料萘酚衍生物(R1,R2,R3位置上)中带有磺酸基等官能团,会影响催化生成联萘酚衍生物的化学反应,必须要对磺酸基团进行酯化,来保护磺酸基官能团。催化反应后再进行水解,得到磺酸基团;
第五,一些新的合成方法需要微波仪器辅助合成等,需要微波设备,成本较高;
第六,用到的催化剂为铜盐,铜-胺络合物,氧钒络合物,Cu(OH)Cl,亚铜盐,铁盐,铊盐等。
发明内容
本发明利用2,7-二萘酚-3,6-二磺酸钠为原料,Cu-1,10-邻菲罗啉(phen)为催化剂,在水体系中一步原位合成得到对称的磺酸基1,1ˊ-联萘酚。
本发明是通过以下技术方案实现的:
一种Cu-phen配合物为催化剂,原位催化2,7-二萘酚-3,6-二磺酸钠合成得到对称的磺酸基1,1ˊ-联萘酚的方法,步骤包括:0.1~0.6mmolCu(NO3)2,0.1~0.6mmol phen,0.1~0.6mmol原料2,7-二萘酚-3,6-二磺酸钠溶入10~30mL去离子水中,室温搅拌1h,然后,将上述溶液80℃加热回流3~4h,冷却至室温,在室温条件下过滤,放置,3d后得到蓝色块状晶体。
优选的步骤包括:0.1mmolCu(NO3)2,0.1mmol phen,0.1mmol原料2,7-二萘酚-3,6-二磺酸钠溶入10mL去离子水中,室温搅拌1h,然后,将上述溶液80℃加热回流3h,冷却至室温,在室温条件下过滤,放置,3d后得到蓝色块状晶体。
本发明使用一种有机物原料(2,7-二萘酚-3,6-二磺酸钠),在水体系中,Cu-phen配合物为催化剂,通过原位催化反应,得到对称的磺酸基1,1ˊ-联萘酚(图1)。该化合物的荧光发射峰在410nm(图4)。该配合物的结构比较稳定,在290℃主体结构才开始分解(图2)。
本发明用到的原料是2,7-二萘酚-3,6-二磺酸钠(图5反应物),在Cu-phen配合物的催化作用下与另一分子的2,7-二萘酚-3,6-二磺酸钠发生反应,生成对称的磺酸基1,1ˊ-联萘酚。phen分子不是反应的原料,只是与Cu2+离子配位得到Cu-phen配合物催化剂,并与生成的对称的磺酸基1,1ˊ-联萘酚共结晶出来(图1)。
现有合成联萘酚衍生物所用到的原料如下图所示,由于如下R1,R2,R3基团所限,需要将其溶解在有机溶剂中,才能进行反应。R1,R2,R3取代基团不能是磺酸基团,羧酸基团等含氧酸官能团,因为其存在时,能够影响催化反应的进行,不能合成得到联萘酚衍生物。
Figure BDA0002955105410000021
R1,R2,R3=H,氨基,烷基,芳香基,烷氧基,芳香氧基,酯基,卤素,羰基有机化合物(如:甲氧羰基),羟甲基衍生物(如:CPh2(OH))等
本专利反应所用到的原料为2,7-二萘酚-3,6-二磺酸钠,是磺酸基的钠盐,所以可溶于水,避免了使用有机溶剂溶解,污染环境。原料中的磺酸基团没有进行酯化保护官能团,直接进行原位催化反应生成产物对称的磺酸基1,1ˊ-联萘酚。按照上述传统的方法进行反应,需要先进行磺酸基团的酯化反应,然后溶解到有机溶剂,再进行催化反应,最后再水解得到磺酸基团,得到产物对称的磺酸基1,1ˊ-联萘酚。
本专利反应所用到的原料为2,7-二萘酚-3,6-二磺酸钠,直接催化反应得到对称的磺酸基1,1ˊ-联萘酚。没有使用萘二酚原料,先进行催化反应,再进行磺化反应得到磺酸基团。
共结晶出来的晶体中一个非对称结构单元包括一个对称的磺酸基1,1ˊ-联萘酚阴离子,两个Cu2+离子,6个phen分子和5个自由水分子。两个中心离子为Cu2+离子,均是六配位的,分别与三个phen的六个氮原子配位。该晶体的化学式为2(C36H24CuN6)·(C20H11O16S4)·5(H2O),分子量为2102.03,属于三斜晶系P-1空间群,晶胞参数为
Figure BDA0002955105410000031
Figure BDA0002955105410000032
α=71.889(2)°,β=78.148(2)°,γ=78.569(2)°。
元素分析:理论值C52.57,H3.31,N8.00;测量值C52.63,H3.42,N8.05。
红外光谱3447(νO-H),3059(νC-H),2922(νC-H),1626(νC=C),1517(νC=C),1464(νC=N),1426(δC-H),1341(νS=O),1308(νS=O),1224(νS=O),1165(νS=O),1068(νS=O),1026(δC-S),847(γC-H),726(γC-H),693(γC-C),659(γC-H),617(δS-O),519(δM-O)。
与现有技术相比,本发明具有以下优点:
(1)可以一步原位催化形成对称的磺基化的1,1ˊ-联萘酚。不需要后修饰,增加磺酸基官能团。反应物原料直接带有磺酸基团,是钠盐,不用有机溶剂溶解。不需要将磺酸基进行酯化保护官能团,直接进行原位催化反应得到产物对称的磺基化的1,1ˊ-联萘酚,没有对合成反应造成任何影响;
(2)使用的溶剂为水,对环境没有危害,绿色环保;
(3)phen不是生成目标产物的原料,而是和Cu2+离子配位形成催化剂;
(4)没有使用THF,四氯甲烷,氯仿以及二氯甲烷等污染环境的有机溶剂;
(5)Cu-phen配合物具有催化活性;
(6)一步原位催化反应实现了对称的磺酸基1,1ˊ-联萘酚的合成;
(7)合成方法简单,条件温和,容易控制。
附图说明
图1为本发明分子结构图;
图2为本发明的热重曲线;
图3为本发明红外光谱;
图4为本发明荧光发射光谱;
图5为本发明对称的磺酸基1,1ˊ-联萘酚生成反应式。
具体实施方式
下面结合实施例对本发明做进一步详细说明,但本发明的保护范围不受实施例所限。
实施例1:
0.1mmolCu(NO3)2,0.1mmol邻菲罗啉,0.1mmol原料2,7-二萘酚-3,6-二磺酸钠溶入10mL去离子水中,室温搅拌1h,然后,将上述溶液80℃加热回流3h,冷却至室温,在室温条件下过滤,放置,3d后得到蓝色块状晶体。
实施例2:
0.2mmolCu(NO3)2,0.2mmol邻菲罗啉,0.2mmol原料2,7-二萘酚-3,6-二磺酸钠溶入20mL去离子水中,室温搅拌1h,然后,将上述溶液80℃加热回流4h,冷却至室温,在室温条件下过滤,放置,3d后得到蓝色块状晶体。
实施例3:
0.3mmolCu(NO3)2,0.3mmol邻菲罗啉,0.3mmol原料2,7-二萘酚-3,6-二磺酸钠溶入20mL去离子水中,室温搅拌1h,然后,将上述溶液80℃加热回流3h,冷却至室温,在室温条件下过滤,放置,4d后得到蓝色块状晶体。
实施例4:
0.4mmolCu(NO3)2,0.4mmol邻菲罗啉,0.4mmol原料2,7-二萘酚-3,6-二磺酸钠溶入20mL去离子水中,室温搅拌1h,然后,将上述溶液80℃加热回流3h,冷却至室温,在室温条件下过滤,放置,3d后得到蓝色块状晶体。
实施例5:
0.5mmolCu(NO3)2,0.5mmol邻菲罗啉,0.5mmol原料2,7-二萘酚-3,6-二磺酸钠溶入30mL去离子水中,室温搅拌1h,然后,将上述溶液80℃加热回流3h,冷却至室温,在室温条件下过滤,放置,3d后得到蓝色块状晶体。
实施例6:
0.6mmolCu(NO3)2,0.6mmol邻菲罗啉,0.6mmol原料2,7-二萘酚-3,6-二磺酸钠溶入20mL去离子水中,室温搅拌1h,然后,将上述溶液80℃加热回流3h,冷却至室温,在室温条件下过滤,放置,3d后得到蓝色块状晶体。

Claims (5)

1.一种铜-1,10-邻菲罗啉配合物原位催化2,7-二萘酚-3,6-二磺酸钠合成对称的磺基化的1,1ˊ-联萘酚的方法,步骤包括:0.1~0.6mmol Cu(NO3)2,0.1~0.6mmol邻菲罗啉,0.1~0.6mmol原料2,7-二萘酚-3,6-二磺酸钠溶入10~30mL去离子水中,室温搅拌1h,然后,将上述溶液80℃加热回流3~4h,冷却至室温,在室温条件下过滤,放置,3d后得到蓝色块状晶体。
2.如权利要求1所述的一种铜-1,10-邻菲罗啉配合物原位催化2,7-二萘酚-3,6-二磺酸钠合成对称的磺基化的1,1ˊ-联萘酚的方法,其特征在于步骤包括:所用原料为0.1~0.6mmol原料2,7-二萘酚-3,6-二磺酸钠,所用合成方法未进行磺酸基团保护,为一步原位合成方法。
3.如权利要求1所述的一种铜-1,10-邻菲罗啉配合物原位催化2,7-二萘酚-3,6-二磺酸钠合成对称的磺基化的1,1ˊ-联萘酚的方法,其特征在于步骤包括:直接使用带有磺酸基团的原料2,7-二萘酚-3,6-二磺酸钠。不是直接使用萘酚作为原料,在催化反应之后,再进行磺酸基化反应。
4.如权利要求1所述的一种铜-1,10-邻菲罗啉配合物原位催化2,7-二萘酚-3,6-二磺酸钠合成对称的磺基化的1,1ˊ-联萘酚的方法,其特征在于步骤包括:所用溶剂为去离子水,是一种绿色合成方法。
5.如权利要求1所述的一种铜-1,10-邻菲罗啉配合物原位催化2,7-二萘酚-3,6-二磺酸钠合成对称的磺基化的1,1ˊ-联萘酚衍生物的方法,其特征在于步骤包括:0.1mmol催化剂Cu(NO3)2,0.1mmol邻菲罗啉,0.1mmol原料2,7-二萘酚-3,6-二磺酸钠溶入10mL去离子水中,室温搅拌1h,然后,将上述溶液中80℃加热回流3h,冷却至室温,在室温条件下过滤,放置,3d后得到蓝色块状晶体。
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