33065-34-8

Upstream product

• 62-53-3 aniline 
• 84-11-7 9,10-phenanthrenequinone 

Downstream Products

• 196811-16-2 2,3,4,5-tetrakis(carbomethoxy)palladacyclopentadiene(9,10-bis(phenylimino)-9,10-dihydrophenanthrene) 
• 205193-12-0 2,3,4,5-tetrakis(trifluoromethyl)palladacyclopentadiene(9,10-bis(phenylimino)-9,10-dihydrophenanthrene) 
• 196811-44-6 PdI(C₁₄H₈N₂(C₆H₅)2)(C₄(COOCH₃)4CH₃) 
• 205193-14-2 Pt(C₄(COOCH₃)4)(C₁₄H₈N₂(C₆H₅)2) 

Relevant academic research and scientific papers

Magnesium complexes bearing N,N-bidentate phenanthrene derivatives for the stereoselective ring-opening polymerization of rac-lactides

Three unreported magnesium complexes (1: R = C6H5, 2: R = 2,6-Et2C6H3, 3: R = 2-tBuC6H4) bearing N,N-bidentate phenanthrene derivatives derived from Schiff bases were synthesized. These complexes were characterized using 1H and 13C NMR spectroscopy and elemental analyses and employed for rac-lactide and L-lactide polymerization. Complex 1 showed the highest activity among these Mg complexes for the ring-opening polymerization (ROP) of L-lactide, and complex 3 showed the highest stereoselectivity for the ROP of rac-lactide, achieving partially heterotactic polylactide (PLA) with a Pr of 0.76. The polymerization kinetics utilizing 2 as a catalyst were researched in detail. The kinetics of the polymerization data revealed that the rate of polymerization was first-order with respect to monomer, and had an order of 0.97 with respect to catalyst. There was a linear relationship between the L-lactide conversion and the number-average molecular weight of PLA.