DoMole-安徽敦茂科技

1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride 1,3-双(2,4,6-三甲基苯基)氯化咪唑

规格: 98%

CAS: 141556-45-8

产品编号: H24188

MDL: MFCD02684541

品牌: INFI

Chemical Name	1,3-Dimesityl-1H-imidazol-3-ium chloride
Synonym	1,3-Bis(mesityl)imidazolium chloride 1,3-Dihydro-1,3-dimesityl-2H-imidazol-2-ylidene monohydrochloride 1,3-Dimesitylimidazolium chloride 1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride 1,3-双(2,4,6-三甲基苯基)氯化咪唑 1,3-二(2,4,6-三甲基苯基)氯化咪唑
MDL Number	MFCD02684541
PubChem Substance ID	87559077
CAS Number	141556-45-8
EC Number	250-023-7
Beilstein Registry Number	5468834
Reaxys-RN	5468834
Chemical Name Translation	1,3-双(2,4,6-三甲基苯基)氯化咪唑

{ALF} In the presence of a base such as KO-t-Bu, generates the imidazol-2-ylidene, an example of an N-heterocyclic carbene (NHC). NHCs are relatively strong bases, and valuable replacements for phosphine ligands in transition metal chemistry. They are relatively stable to dimerization, but sensitive to air and moisture, so are best generated in situ. Review: Angew. Chem. Int. Ed., 36, 2163 (1997). For a review of stable carbenes, see: Chem. Rev., 100, 39 (2000).

{ALF} See also 1,3-Bis(2,6-diisopropylphenyl)imidazolium chloride, H27150.

{ALF} The carbene has also been reported to be an excellent nucleophilic catalyst in transesterification reactions, milder, more selective and more active than conventional systems: Org. Lett., 4, 3583, 3587 (2002).

{ALF} Used as a phosphine-free ligand in various metal-catalyzed coupling reactions, often with advantageous results in difficult cases. For use in the Pd-catalyzed cross-coupling of aryl Grignards with aryl chlorides (Kumada reaction), see: J. Am. Chem. Soc., 121, 9889 (1999). Many examples have been recorded of the use of NHC ligands in the Suzuki coupling reaction, for examples utilizing 1,3-dimesitylimidazol-2-ylidene, in the coupling of arylboronic acids with relatively unreactive aryl chlorides, see: J. Org. Chem., 64, 3804 (1999); J. Organomet. Chem., 595, 186 (2000); Tetrahedron Lett., 45, 3511 (2004). Has been found to give superior results to phosphines in the coupling of sulfonyl chlorides with boronic acids: Org. Lett., 6, 95 (2004).

141556-45-8 H24188 1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride
1,3-双(2,4,6-三甲基苯基)氯化咪唑

化学属性

Mol. Formula	C21H25ClN2
Mol. Weight	340.89
Melting Point	>300
TSCA	No
Density	1.422
Appearance	off-white to yellow pwdr.
Danger-Level	-
pH	-:-
Redox	-

*以上化合物性质及应用等信息仅供参考

电子化学品

催化剂

配体

有机硅

元素分类

其他精细新材料

1,3-Bis(2,4,6-trimethylphenyl)imidazolium chloride 1,3-双(2,4,6-三甲基苯基)氯化咪唑

规格: 98%

化学属性

Contact Us