CN106966933A - 一种合成芳基硫醚类化合物的方法 - Google Patents

一种合成芳基硫醚类化合物的方法 Download PDF

Info

Publication number
CN106966933A
CN106966933A CN201710119757.6A CN201710119757A CN106966933A CN 106966933 A CN106966933 A CN 106966933A CN 201710119757 A CN201710119757 A CN 201710119757A CN 106966933 A CN106966933 A CN 106966933A
Authority
CN
China
Prior art keywords
aryl
compound
reaction
ether type
compounds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710119757.6A
Other languages
English (en)
Other versions
CN106966933B (zh
Inventor
袁冰芯
李恒
陈永奇
杨贯羽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhengzhou University
Original Assignee
Zhengzhou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhengzhou University filed Critical Zhengzhou University
Priority to CN201710119757.6A priority Critical patent/CN106966933B/zh
Publication of CN106966933A publication Critical patent/CN106966933A/zh
Application granted granted Critical
Publication of CN106966933B publication Critical patent/CN106966933B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/14Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C327/00Thiocarboxylic acids
    • C07C327/02Monothiocarboxylic acids
    • C07C327/04Monothiocarboxylic acids having carbon atoms of thiocarboxyl groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C327/06Monothiocarboxylic acids having carbon atoms of thiocarboxyl groups bound to hydrogen atoms or to acyclic carbon atoms to hydrogen atoms or to carbon atoms of an acyclic saturated carbon skeleton
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D277/00Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
    • C07D277/60Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings condensed with carbocyclic rings or ring systems
    • C07D277/62Benzothiazoles
    • C07D277/68Benzothiazoles 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 in position 2
    • C07D277/70Sulfur atoms
    • C07D277/74Sulfur atoms substituted by carbon atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D295/00Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/04Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
    • C07D295/08Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms
    • C07D295/096Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D295/00Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/04Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
    • C07D295/12Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly or doubly bound nitrogen atoms
    • C07D295/135Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly or doubly bound nitrogen atoms with the ring nitrogen atoms and the substituent nitrogen atoms separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D295/00Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/22Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with hetero atoms directly attached to ring nitrogen atoms
    • C07D295/26Sulfur atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

本发明提供了一种合成芳基硫醚类化合物的方法,包括以下步骤:将酚类化合物或胺类化合物、硫醇类化合物、过渡金属催化剂、水加入反应瓶中、封口,向反应瓶中充入氧气、加热搅拌反应,之后经萃取、干燥、浓缩、纯化,制得芳基硫醚类化合物。本发明提供了一种通过酞菁类过渡金属催化剂催化酚类或胺类化合物与硫醇类化合物的氧化偶联反应来制备芳基硫醚类化合物的新方法。合成步骤简单、操作简便易行、产物收率高,达80%以上,为芳基硫醚类化合物的合成提供了一种新途径。与现有方法比,原料廉价易得,且用水作溶剂(催化剂能够很好地溶解在水中),非均相条件下,能够得到高分离收率的芳基硫醚化合物,提高了反应的效率和反应的原子经济性。

Description

一种合成芳基硫醚类化合物的方法
技术领域
本发明涉及氧(硫)氮类化合物合成技术领域,具体涉及一种芳基硫醚类化合物的制备方法。
背景技术
芳基硫化物广泛存在于材料科学和药物的活性化合物中,许多能够治疗阿尔茨海默病、帕金森病、癌症、疟疾、炎症和HIV病毒的药物核结构中都有芳基硫化合物单元(Liu,G.;Huth,J.R.;Olejniczak,E.et al.J.Med.Chem.2001,44,1202-1210.)。比如硫醚中,2-芳硫基苯酚化合物具有药物活性,其可以合成4-羟基-3-(芳硫基)-2H-色烯-2-酮,此化合物表现出抗菌和止痛活性。鉴于官能团化的芳基硫醚具有重要的实用性,众多的催化反应都改善了C-S键的形成。一般的合成方法是通过催化剂将C-H键活化,发生氧化偶联反应,形成C-S键,而最为典型的是用碘做催化剂,有机试剂作溶剂(如下反应1和反应2所示),这是一种普遍的、有效的合成途径(Yasunari M.,Motonori K.,Takahiro N.,etal.J.Org.Chem.2004,69,7688-7693.),但是容易污染环境。其中硫醇化/硫化试剂,例如磺酰肼,亚磺酸钠和二芳基二硫化物价格昂贵且污染环境。随着社会的发展,人们对发展绿色化学和保护环境表现出了极大地热情。在探索中,环保的合成方法取得了很大的进步。虽然在科研工作中已有以分子氧作为氧化剂参与氧化反应的报道,然而在实际工业生产中还未得到应用,主要是源于高压反应中对于反应容器的特殊要求导致造价过高。
传统的反应如下:
发明内容
本发明提供了一种条件温和、环境友好且能直接利用酚类或胺类和硫醇类化合物的氧化偶联反应来合成芳基硫醚类化合物的新方法。
本文在实验过程中,选择了易溶于水的金属配合物催化剂,以天然存在的分子氧作为氧化剂,在非均相条件下能够高效的得到目标产物,且原料经济易得,最重要的是能够达到环保的要求。
实现本发明的技术方案是:一种合成芳基硫醚类化合物的方法,包括以下步骤:将酚类化合物或胺类化合物、硫醇类化合物、过渡金属催化剂、水加入反应瓶中、封口,向反应瓶中充入氧气、加热搅拌反应,之后经萃取、干燥、浓缩、纯化,制得芳基硫醚类化合物;所述芳基硫醚类化合物具有以下通式:
通式中R1表示氢原子、烷基、芳基、酰基、卤基、杂环基或酯基;R2表示氢原子、烷基、芳基、酰基、杂环基或酯基。
所述的酚类化合物或胺类化合物、硫醇类化合物、过渡金属催化剂的摩尔比为酚类化合物或胺类化合物:硫醇类化合物:过渡金属催化剂=(0.5-1.5):(0.8-2.5):(0.03-0.08);所述水的用量为1-10mL。
所述酚类化合物或胺类化合物具有如下通式:
通式中X为羟基或氨基;R1表示氢原子、烷基、芳基、酰基、卤基、杂环基或酯基。
所述的硫醇类化合物具有如下通式:
R2-SH
通式中R2表示氢原子、烷基、芳基、酰基、杂环基或酯基。
所述过度金属催化剂的结构通式为:
通式中Y表示Fe、Cu、Mn、Co、Ni;Z表示C、S。
所述加热搅拌时反应温度为80-120℃;反应时间为10-24 h。
在本发明方法中,仅需向反应容器中冲入一大气压的氧气,无需高压反应容器,普通的玻璃仪器即可,这在分子氧作为氧化剂的反应条件中是一大进步,也意味着提供了分子氧工业应用的途径。此外,本发明方法以水作溶剂,由于目标有机产物在水中溶解性极地,反应后处理过程中可以简单的过滤即可得到目标产物,而反应催化剂仍溶解于水中。过滤后反应母液仍可在循环使用,减少反应废弃物和废液。反应通过碳氢键活化得到目标产物,副产物主要是水,实现了绿色合成的目标。
本发明的反应方程式如下:
本发明的有益效果是:本发明提供了一种通过酞菁类过渡金属催化剂催化酚类或胺类化合物与硫醇类化合物的氧化偶联反应来制备芳基硫醚类化合物的新方法。合成步骤简单、操作简便易行、产物收率高,达80%以上,为芳基硫醚类化合物的合成提供了一种新途径。与现有方法比,原料廉价易得,且用水作溶剂(催化剂能够很好地溶解在水中),非均相条件下,能够得到高分离收率的芳基硫醚化合物,达到了环保的条件,提高了反应的效率和反应的原子经济性。
附图说明
图1是实施例5制备的芳基硫醚类化合物的1H NMR图谱;
图2是实施例5制备的芳基硫醚类化合物的13C NMR。
具体实施方式
实施例1
芳基硫醚类化合物的制备方法如下:
向干燥的25mL Schlenk反应管中加入β-萘酚化合物(0.5mmol),对甲苯硫酚(1.5mmol),磺化酞菁钴(0.025mmol),加入水2mL,冲入氧气,加热至回流,反应18h,反应结束后,用乙酸乙酯萃取,将萃取液用无水硫酸钠干燥,减压浓缩除去溶剂,柱色谱分离得到目标产物。
实施例2
芳基硫醚类化合物的制备方法如下:
向干燥的25mL Schlenk反应管中加入β-萘酚化合物(0.5mmol),邻溴苯硫酚(83.5mg,1.5mmol),四羧基酞菁铜(0.025mmol),加入水2mL,冲入氧气,加热至回流,反应24h,反应结束后,用乙酸乙酯萃取,将萃取液用无水硫酸钠干燥,减压浓缩除去溶剂,柱色谱分离得到目标产物。
实施例3
芳基硫醚类化合物的制备方法如下:
向干燥的25mL Schlenk反应管中加入6-溴-2-萘酚化合物(0.5mmol),己硫醇(1.5mmol),磺化酞菁铁(0.025mmol),加入水2mL,冲入氧气,加热至回流,反应24h,反应结束后,用乙酸乙酯萃取,将萃取液用无水硫酸钠干燥,减压浓缩除去溶剂,柱色谱分离得到目标产物。
实施例4
芳基硫醚类化合物的制备方法如下:
向干燥的25mL Schlenk反应管中加入β-萘酚化合物(0.5mmol),对甲苯硫酚(1.5mmol),磺化酞菁锰(0.025mmol),加入水2mL,冲入氧气,加热至回流,反应24h,反应结束后,用乙酸乙酯萃取,将萃取液用无水硫酸钠干燥,减压浓缩除去溶剂,柱色谱分离得到目标产物。
实施例5
芳基硫醚类化合物的制备方法如下:
向干燥的25mL Schlenk反应管中加入6-溴-2-萘酚(0.5mmol),4-氨基苯硫酚(1.5mmol),磺化酞菁锰(0.025mmol),加入水2mL,冲入氧气,加热至回流,反应24h,反应结束后,用乙酸乙酯萃取,将萃取液用无水硫酸钠干燥,减压浓缩除去溶剂,柱色谱分离得到目标产物。
Red Brown solid,92%yield.162-164℃.1H NMR(600MHz,DMSO)δ=10.20(s,1H),8.35(d,J=9.0Hz,1H),8.10(d,J=2.1Hz,1H),7.86(d,J=8.9Hz,1H),7.62-7.60(m,1H),7.350-7.34(m,1H),6.98-6.95(m,2H),6.48-6.46(m,2H),5.12(s,2H)。
13C NMR(150MHz,DMSO),δ=158.4,148.0,134.9,130.9,130.8,130.5,130.4,130.3,127.5,121.4,120.2,116.5,115.0,112.5。
不同条件下制备芳基硫醚类化合物见表1。
表1不同条件下制备芳基硫醚类化合物
a酚类化合物或胺类化合物:硫醇类化合物:过渡金属催化剂
以上所述均为本发明的部分实施例,并非用来限制本发明。但凡依本发明内容所做的均等变化与修饰,都为本发明的保护范围之内。

Claims (6)

1.一种合成芳基硫醚类化合物的方法,其特征在于包括以下步骤:将酚类化合物或胺类化合物、硫醇类化合物、过渡金属催化剂、水加入反应瓶中、封口,向反应瓶中充入氧气、加热搅拌反应,之后经萃取、干燥、浓缩、纯化,制得芳基硫醚类化合物;所述芳基硫醚类化合物具有以下通式:
通式中R1表示氢原子、烷基、芳基、酰基、卤基、杂环基或酯基;R2表示氢原子、烷基、芳基、酰基、杂环基或酯基。
2.如权利要求1所述的合成芳基硫醚类化合物的方法,其特征在于:所述的酚类化合物或胺类化合物、硫醇类化合物、过渡金属催化剂的摩尔比为酚类化合物或胺类化合物:硫醇类化合物:过渡金属催化剂=(0.5-1.5):(0.8-2.5):(0.03-0.08);所述水的用量为1-10mL。
3.如权利要求2所述的合成芳基硫醚类化合物的方法,其特征在于所述酚类化合物或胺类化合物具有如下通式:
通式中X为羟基或氨基;R1表示氢原子、烷基、芳基、酰基、卤基、杂环基或酯基。
4.如权利要求2所述的合成芳基硫醚类化合物的方法,其特征在于:所述的硫醇类化合物具有如下通式:
R2-SH
通式中R2表示氢原子、烷基、芳基、酰基、杂环基或酯基。
5.如权利要求2所述的合成芳基硫醚类化合物的方法,其特征在于:所述过度金属催化剂的结构通式为:
通式中Y表示Fe、Cu、Mn、Co、Ni;Z表示C、S。
6.如权利要求1所述的合成芳基硫醚类化合物的方法,其特征在于:所述加热搅拌时反应温度为80-120℃;反应时间为10-24 h。
CN201710119757.6A 2017-03-02 2017-03-02 一种合成芳基硫醚类化合物的方法 Active CN106966933B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710119757.6A CN106966933B (zh) 2017-03-02 2017-03-02 一种合成芳基硫醚类化合物的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710119757.6A CN106966933B (zh) 2017-03-02 2017-03-02 一种合成芳基硫醚类化合物的方法

Publications (2)

Publication Number Publication Date
CN106966933A true CN106966933A (zh) 2017-07-21
CN106966933B CN106966933B (zh) 2019-01-11

Family

ID=59328384

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710119757.6A Active CN106966933B (zh) 2017-03-02 2017-03-02 一种合成芳基硫醚类化合物的方法

Country Status (1)

Country Link
CN (1) CN106966933B (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110003065A (zh) * 2019-04-04 2019-07-12 郑州大学 一种水溶性过渡金属配合物催化分子氧氧化水相合成不对称硫化物的方法
CN113185476A (zh) * 2021-04-29 2021-07-30 郑州大学 一种合成儿茶酚硫醚类化合物的方法
CN113816884A (zh) * 2021-02-24 2021-12-21 南开大学 芳硫基萘酚、萘胺类化合物以及苯硫基吲哚类化合物的合成方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104725172A (zh) * 2015-02-26 2015-06-24 华东师范大学 一种芳基硫醚类化合物的合成方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104725172A (zh) * 2015-02-26 2015-06-24 华东师范大学 一种芳基硫醚类化合物的合成方法

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
FUHONG XIAO 等: "Piperidine Promoted Direct Sulfenylation of 2-Naphthol with Aryl Thiols under Aqueous Conditions", 《CHEMISTRYSELECT》 *
SANTOSH KUMAR REDDY PARUMALA 等: "Iodine catalyzed cross-dehydrogenative C-S coupling by C(sp2)–H bond activation: direct access to aryl sulfides from aryl thiols", 《GREEN CHEMISTRY》 *
XING KANG 等: "Iodine-Mediated Thiolation of Substituted Naphthols/Naphthylamines and Arylsulfonyl Hydrazides via C(sp2)-H Bond Functionalization", 《THE JOURNAL OF ORGANIC CHEMISTRY》 *
YASUNARI MAEDA 等: "Vanadium-Catalyzed Sulfenylation of Indoles and 2-Naphthols with Thiols under Molecular Oxygen", 《J.ORG.CHEM.》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110003065A (zh) * 2019-04-04 2019-07-12 郑州大学 一种水溶性过渡金属配合物催化分子氧氧化水相合成不对称硫化物的方法
CN110003065B (zh) * 2019-04-04 2021-01-05 郑州大学 一种水溶性过渡金属配合物催化分子氧氧化水相合成不对称硫化物的方法
CN113816884A (zh) * 2021-02-24 2021-12-21 南开大学 芳硫基萘酚、萘胺类化合物以及苯硫基吲哚类化合物的合成方法
CN113185476A (zh) * 2021-04-29 2021-07-30 郑州大学 一种合成儿茶酚硫醚类化合物的方法
CN113185476B (zh) * 2021-04-29 2023-09-12 郑州大学 一种合成儿茶酚硫醚类化合物的方法

Also Published As

Publication number Publication date
CN106966933B (zh) 2019-01-11

Similar Documents

Publication Publication Date Title
Zhang et al. Metal-free oxidation of sulfides by carbon nitride with visible light illumination at room temperature
Varyani et al. Amino acid ionic liquid bound copper Schiff base catalyzed highly efficient three component A3-coupling reaction
CN106966933B (zh) 一种合成芳基硫醚类化合物的方法
Yuan et al. Gold (III) catalyzed oxidation of sulfides to sulfoxides with hydrogen peroxide
CN113444752B (zh) 一种采用微通道反应器连续制备2-苄基异吲哚啉酮类化合物的方法
Nie et al. Chiral bifunctional thiourea-catalyzed enantioselective aldol reaction of trifluoroacetaldehyde hemiacetal with aromatic ketones
Abbasi et al. Efficient reduction of sulfoxides with NaHSO3 catalyzed by I2
Liang et al. Construction of axially chiral compounds via catalytic asymmetric radical reaction
CN108341760B (zh) 一种水相硫醚类化合物的制备方法及其产品
Bhatia et al. Cobalt (II) catalysed reaction of alkenes with aliphatic aldehydes and molecular oxygen: scope and mechanism
Sarmah et al. Aqueous extracts of biomass ash as an alternative class of Green Solvents for organic transformations: A review update
CN111285776A (zh) 可见光催化1,2-二胺类化合物绿色合成的方法
CN108947880B (zh) 一种基于光催化的硫代氨基甲酸酯化合物制备方法
CN106518663A (zh) 一种α‑酰氧基酮化合物的制备方法
Yang et al. A highly efficient and practical new PEG-bound bi-cinchona alkaloid ligand for the catalytic asymmetric aminohydroxylation of alkenes
CN110560167A (zh) 一种用于催化氧化硫醚化合物的催化剂的制备方法及制备得到的催化剂及其应用
CN106631926B (zh) 一种选择性合成芳基甲基砜和β-羟基砜衍生物的方法
CN106349125B (zh) 利用锰盐选择性合成(e)‑乙烯基砜化合物的方法
CN109996786B (zh) 制备虾红素的改进方法
CN107089934B (zh) 水溶性有机三价碘试剂氨基磺酸亚碘酰苯类化合物与合成
CN107311958B (zh) 一种苯并噻唑-含氮杂环杂化体的合成方法
Bashir et al. Schiff bases derived from phloroglucinol carbonyl variants and their applications-A review
Wang et al. Efficient Synthesis of α, β‐Epoxy Carbonyl Compounds in Acetonitrile: Darzens Condensation of Aromatic Aldehydes with Ethyl Chloroacetate
CN109180545B (zh) 水相中苯基酚酸催化分子氧氧化合成具有s-s键的二硫化合物的方法
CN109020922B (zh) 一种环状磺酰胺类化合物的制备方法

Legal Events

Date Code Title Description
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant