22401-05-4

Upstream product

• 63389-80-0 N-phenylaminotriphenylphosphoranimine 
• 23326-27-4 Methyl 2-butynoate 
• 78575-98-1 3-methyl-1-phenyl-4-bromo-2-pyrazolin-5-one 
• 603-35-0 triphenylphosphine 

Downstream Products

• 869194-14-9 chloro(o-dimethylaminomethylphenyl)(3-methyl-1-phenyl-4-triphenylphosphoranylidene-2-pyrazolin-5-one)palladium(II) 
• 869194-12-7 trans-dichloro-bis(3-methyl-1-phenyl-4-triphenylphosphoranylidene-2-pyrazolin-5-one)palladium(II) 

Relevant academic research and scientific papers

An efficient keim-type catalyst based on an electron-poor P,O-chelate; tuning the selectivity of ethylene oligomerisation towards short α-olefins

The tertiary phosphane Ph2P-pzONa, in which the phosphorus atom is substituted by an electron-withdrawing pyrazolonato unit, reacts with trans-[NiPhCl(PPh3)2] to afford quantitatively trans-P,P′-[NiPh(Ph2P-pzO)(

Can weak interactions modify the binding properties of a strong nitrogen donor? Unusual N-coordination of a phosphoranylidene-substituted pyrazolone unit towards palladium(II) centres: An experimental and theoretical study

Selective N(2)-binding of 3-methyl-l-phenyl-4-(triphenylphosphoranylidene)- 2-pyrazolin-5-one (L) has been found in two palladium(II) complexes, [PdCl 2L2] (2) and [Pd(o-C6H4CH 2NMe2)ClL] (3). X-Ray diffraction studies show that the pyrazole rings lie almost perpendicular to the coordination plane. In both complexes the metal atom is located out of the plane defined by the pyrazole ring(s) (dihedral angle between the plane and the Pd - N vector ～30°). To investigate the origin of this distortion, a theoretical study was carried out on a simplified model of complex 2, where a single pyrazolone ligand was replaced by NH3. From this study it could be inferred that the out-of-plane distortion mainly involves weak, electrostatic interactions between a chlorine atom and an ortho-aromatic H atom of the N(l)-linked phenyl group, as well as between the other chlorine atom and an ortho-aromatic H atom of the PPh3 group. The Royal Society of Chemistry 2005.

A regioselective synthesis of 5-pyrazolones and pyrazoles from phosphazenes derived from hydrazines and acetylenic esters

Efficient and regioselective syntheses of 1-phenyl-5-pyrazolones substituted with a phosphoranylidene group in the 3-position and of 3- alkoxycarbonyl-5-methoxy-1-phenyl pyrazoles are described. The key step is the formation of functionalized hydrazones b