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绿色试剂

发布时间:2022-08-17 所属分类:有机化学

Green chemistry has become a central focus of chemical research and development in the 21st century. Some of the most widely used reagents, such as NXS (including NBS, NCS and NIS), produce reactions that are ‘greener’ than traditional reactions with Cu catalysts in halogenation. There are also many common reagents which are harmful and/or create pollution so chemists are constantly working to generate alternate ‘green’ reagents to satisfy growing demand from academia and industry.
 
We understand that chemistry is a tool for scientific research and manufacturing, but this tool comes with a duty to make our world a better place – one with cleaner oceans, fresher air and safer food. J&K is proud to provide environmentally friendly green reagents, including synthetic reagents, solvents, catalysts & ligands.

■ Green Synthetic Reagents

● Featured Products:
1.    Caro’s acid (Potassium peroxomonosulfate, 4.5% active oxygen, 229941, 37222-66-5)
 

 

Reference 1: Caro’s acid with acetone for epoxide formation: Angew. Chem. Int. Ed., 2012, 51(10), 2443-2447
Reference 2: Caro’s acid for sulfones formation: Bioorg. Med. Chem.Lett.2012, 22(15), 5114-5117
Reference 3 - 5: Caro’s acid with MX for C-X formation: Org. Lett., 2013, 15(24), 6226-6229; Tetrahedron Lett.,2014, 55(13), 2127-2129; Synthetic Commun.,2002, 32(15), 2319-2324
 
1.    MMPP (Magnesium bis(monoperoxyphthalate) hexahydrate, 70%, 566277, 84665-66-7)
 2.1MMPP for epoxide formation:

 2.2MMPP for N-Oxide formation:

 

3.    NFSI(N-Fluorobenzenesulfonimide, 98%, 115351, 133745-75-2) for fluorination:
4.    Hantzch ethyl ester (Diethyl 1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylate, 98%, 505196, 1149-23-1) for reduction:
 
5.    COMU((1-Cyano-2-ethoxy-2-oxoethylidenaminooxy)dimethylamino-morpholino
-carbenium hexafluorophosphate, 98%, 1150273, 1075198-30-9) for amide formation:

 

 

 

6.    DPAT (Diphenylammoniumtrifluoromethanesulfonate, 98%, 802121, 164411-06-7) for one pot ring closing:
 

Cat. No.
Description
CAS
Uses
229941Caro’s acid (Potassium peroxomonosulfate, 4.5% active oxygen)37222-66-5C-X Formation & Oxidation
115351NFSI (N-Fluorobenzenesulfonimide, 98%)133745-75-2C-F Formation
272873NBS (N-Bromosuccinimide, 99%)128-08-5C-Br Formation
199549NCS (N-Chlorosuccinimide, 97.5%)128-09-6C-Cl Formation & Oxidation
275643NIS (N-Iodosuccinimide, 99%)516-12-1C-I Formation
580675PhNMe3Br3 (Phenyltrimethylammoniumtribromide, 97%)4207-56-1C-Br Formation
593050Py·HBr3(Pyridiniumtribromide, 90%)39416-48-3C-Br Formation
2863325% NaClO (Sodium hypochlorite, 5% available chlorine)7681-52-9C-Cl Formation & Oxidation
93571013% NaClO (Sodium hypochlorite, 13% available chlorine)7681-52-9C-Cl Formation & Oxidation
946474Dichlorodimethylhydantoin (1,3-Dichloro-5,5-dimethylhydantoin, 98%)118-52-5C-Cl Formation
944192Dichlorodimethylhydantoin (1,3-Dichloro-5,5-dimethylhydantoin, 68% available chlorine)118-52-5C-Cl Formation
194371Oxalylchloride, 98%79-37-8C-Cl Formation & Oxidation& Amide (Ester) Formation
197054Phenyl dichlorophosphate, 97%770-12-7C-Cl Formation
499800Me4NF (Tetramethylammonium fluoride tetrahydrate, 98%)17787-40-5C-F Formation
942961Bis(2-methoxyethyl)aminosulphurtrifluoride, 95%202289-38-1C-F Formation
10001734-tert-Butyl-2,6-dimethylphenylsulphur trifluoride, 90%947725-04-4C-F Formation
107860ICl (Iodine monochloride, 99%)7790-99-0C-I Formation
587039BenzyltrimethylammoniumDichloroiodiate, 98%114971-52-7C-I Formation
100922Sodium percarbonate15630-89-4Oxidation
401569Urea-Hydrogen peroxide, contains 35 wt.% H2O2, stabilized124-43-6Oxidation
235286TEMPO (2,2,6,6-Tetramethylpiperidinooxy, 98%)2564-83-2Oxidation
266601
SO3-Pyridine
(Sulfur trioxide pyridine complex, 98%, tech., active SO3 ca. 48 - 50%)
26412-87-3Oxidation
201085
Stabilized IBX
(2-Iodoxybenzoic acid, stabilized)
61717-82-6Oxidation
187984
Al(Ot-Bu)3
(Aluminum tert-butoxide, 99%)
556-91-2Oxidation
275928DCC (N,N'-Dicyclohexylcarbodiimide, 99%) (with DMSO, 935690, 67-68-5)538-75-0Oxidation
162363NaIO4 (Sodium periodate, 99%)7790-28-5Oxidation
566277MMPP (Magnesium bis(monoperoxyphthalate) hexahydrate, 70%)84665-66-7Oxidation
505196Hantzch ethyl ester (Diethyl 1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylate, 98%)1149-23-1Reduction
610284Catecholborane, 1.0 M solution in THF, J&KSeal274-07-7Reduction
299272Formic acid, 98%64-18-6Reduction
1150273COMU ((1-Cyano-2-ethoxy-2-oxoethylidenaminooxy)dimethylamino-morpholino-carbenium hexafluorophosphate, 98%)1075198-30-9Amide Foramtion
180331CDI (N,N'-Carbonyldiimidazole, 98%)530-62-1Amide Formation
190359i-BuOCOCl (Isobutyl chloroformate, 98%)
543-27-1
 
Amide Formation
102492Mukaiyama reagent (2-Chloro-1-methylpyridinium iodide, 97%)14338-32-0Amide Formation& Ester Formation
191243SuOCOOSu (N,N'-Disuccinimidyl carbonate, 99%)74124-79-1Amide Formation
180331TFFH(N,N,N',N'-Tetramethylfluoroformamidiniunhexafluorophosphate, 97%)164298-23-1Amide Formation
186836EEDQ (N-Ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline, 98%)16357-59-8Amide Formation
211112EDCI (N-(3-Dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride, 99%)25952-53-8Amide Formation
260292CDMT(2-Chloro-4,6-dimethoxy-1,3,5-triazine, 97%)3140-73-6Amide Formation
292269DBU(1,8-Diazabicyclo[5.4.0]undec-7-ene, 98%)6674-22-2Ether Formation
802121DPAT (Diphenylammoniumtrifluoromethanesulfonate, 98%)164411-06-7Others

■ Green Solvents

● 2-Methyl-tetrahydrofuran (2-MeTHF) can be derived from renewable resources (e.g., furfural or levulinic acid) and is a promising alternative solvent in the search for environmentally benign synthesis strategies.
 
● Cyclopentyl methyl ether (CPME) has been used in chemical synthesis as an alternative to hazardous solvents. Wide synthetic utility and a detailed toxicity study suggest CPME as a green and sustainable solvent of choice for modern chemical transformations.
 
Reference:
1) 2-Methyltetrahydrofuran (2-MeTHF): a biomass-derived solvent with broad application in organic chemistry, ChemSusChem.,2012, 5(8), 1369-1379;
2) The toxicological assessment of cyclopentyl methyl ether (CPME) as a green solvent, Molecules2013, 18, 3183-3194
 
Cat. No.
Description
CAS
2039182-Methyltetrahydrofuran, 99%, stabilized with BHT96-47-9
2848142-Methyltetrahydrofuran, 99%, SuperDry, J&KSeal96-47-9
913731Cyclopentyl methyl ether, 99%5614-37-9
Please also see
Ionic Liquid - Page **
Catalysts & Ligands - Page **


 
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