10/9/2021 News The Absolute Best Science Experiment for Tris(dimethylamino)phosphine

Synthetic Route of 1608-26-0, Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.1608-26-0, Name is Tris(dimethylamino)phosphine
, molecular formula is P[N(CH3)2]3. In a patent, introducing its new discovery.

A series of reactions of ring-substituted 1,3,2-dioxaphospholanes, 1,3,2-oxazaphospholanes, 1,2-oxaphospholes, and phosphetanes bearing the leaving groups Cl, OR, or NR2 on phosphorus, with the nucleophiles HCl, MeO-, MeOH, PhOH, Me2NH, Et2NH, and 5NH have been studied.N.m.r. signals (1H and 31P) from reactant and product diastereoisomers have been assigned, and the stereochemistry of the substitution reactions have been determined by 31P n.m.r. monitoring.The outcome varies from complete inversion to complete lack of stereoselectivity.During the initial stages many of the non-selective reactions proceed with predominant inversion, and most of the results may be interpreted by assuming that the actual substitution step occurs with inversion, and that the lack of stereoselectivity is due to competing isomerizations of products or reactants.Exceptions are certain reactions where the leaving group is Cl; these appear to involve a non-selective substitution step.

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Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate