Efficient aerobic oxidation of alcohols using a novel combination N-hydroxy phthalimide (NHPI) and a recyclable heterogeneous cobalt complex

One-pot synthesis of α-aminonitriles using a highly efficient and recyclable silica-based scandium (III) interphase catalyst

“…In continuation of our investigations into the development of new efficient and recyclable solid-based catalyst for functional group transformations [41][42][43][44][45][46][47][48][49][50][51], herein, we wish to present that catalyst 2 (5-6 mol% equivalent to Sc) is a highly powerful catalyst for the three-component Strecker synthesis of a-aminonitrilesin in excellent yields at ambient temperature and in the absence of any chemical dehydrating agent (Scheme 2).…”

Aerobic oxidation behavior of α-ionone catalyzed by N-hydroxyphthalimide combined with acetylacetone cobalt(II)

“…1) The catalytic oxidation of α-ionone with molecular oxygen in the presence of NHPI/Co(acac) 2 system under mild conditions gives 5-keto-α-ionone, epoxy-α-ionone, as well as rearrangement products of 4-keto-β-ionone and epoxy-β-ionone; 5-keto-α-ionone is the major product.…”

Cobalt salophen complex supported on magnetic nanoparticles as an efficient reusable catalyst for oxidation of benzylic alcohols

“…Compared with the homogeneous and heterogeneous same catalysts our novel catalyst has shown much more superiority. The observed high activity of the catalyst can be attributed to the nanosized character of the support which increases surface area for more interaction with substrates [26][27][28] .…”

“…The other bands at 589cm -1 , 802 cm -1 and 1088 cm -1 ascribed to Fe-O stretching absorption, asymmetrical and symmetrical vibrations of the Si-O-Si bond respectively (see Fig. 1) [24][25][26][27][28][29][30] .…”