In an article, author is Takfaoui, Abdelilah, once mentioned the application of 822-55-9, Name is 4-(Hydroxymethyl)imidazole, molecular formula is C4H6N2O, molecular weight is 98.1, MDL number is MFCD00266718, category is imidazoles-derivatives. Now introduce a scientific discovery about this category, Quality Control of 4-(Hydroxymethyl)imidazole.
One pot Pd(OAc)(2)-catalysed 2,5-diarylation of imidazoles derivatives
The regioselective 2- or 5-arylation of imidazole derivatives with aryl halides using palladium catalysts has been described in recent years; whereas the arylation at both C2 and C5 carbons of imidazoles in high yields has not been performed. We found conditions allowing the access to these 2,5-diarylimidazoles via a one pot reaction. The choice of the base was found to be crucial to obtain these products in high yields. Using CsOAc as the base, DMA as the solvent and only 2 mol % of the phosphine-free Pd(OAc)(2) the catalyst, the target 2,5-diarylated imidazoles were obtained in moderate to good yields with a wide variety of aryl bromides. Substituents such as fluoro, trifluoromethyl, formyl, acetyl, propionyl, ester, nitro or nitrile on the aryl bromide were tolerated. Sterically congested aryl bromides or heteroaryl bromides can also be employed. Surprisingly the nature of the substituent at position 1 on the imidazole derivative exhibits a huge influence on the reaction. (C) 2014 Elsevier Ltd. All rights reserved.
Do you like my blog? If you like, you can also browse other articles about this kind. Thanks for taking the time to read the blog about 822-55-9, Quality Control of 4-(Hydroxymethyl)imidazole.