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Tris(trimethylsilyl)phosphine is prepared by treating trimethylsilyl chloride, white phosphorus, and sodium-potassium alloy: [2] 1/4 P 4 + 3 Me 3 SiCl + 3 K → P(SiMe 3) 3 + 3 KCl. Several other methods exist. [1] Copper phosphide cluster Cu 96 P 30 {P(SiMe 3) 2} 6 (PEt 3) 18 with C and H atoms omitted for clarity (red=Cu, purple=P, tan=Si ...
Diethyl phosphite is the organophosphorus compound with the formula (C 2 H 5 O) 2 P(O)H. It is a popular reagent for generating other organophosphorus compounds, exploiting the high reactivity of the P-H bond. Diethyl phosphite is a colorless liquid. [1] The molecule is tetrahedral.
A trimethylsilyl group (abbreviated TMS) is a functional group in organic chemistry.This group consists of three methyl groups bonded to a silicon atom [−Si(CH 3) 3], which is in turn bonded to the rest of a molecule.
P(OCH 3) 3 → CH 3 P(O)(OCH 3) 2. As a ligand, trimethyl phosphite has a smaller cone angle and better acceptor properties relative to trimethylphosphine. A representative derivative is the colorless tetrahedral complex Ni(P(OMe) 3) 4 (m.p. 108 °C). [4] The tridentate ligand called the Kläui ligand is derived from trimethyl phosphite. The ...
[2] [3] This reaction is widely used for the synthesis of various phosphonates, phosphinates, and phosphine oxides. Several reviews have been published. [4] [5] The reaction also occurs for coordinated phosphite ligands, as illustrated by the demethylation of {(C 5 H 5)Co[(CH 3 O) 3 P] 3} 2+ to give {(C 5 H 5)Co[(CH 3 O) 2 PO] 3} −, which is ...
TTMPP removes the trimethylsilyl group from ketene silyl acetals (the enol ether of esters) to give enolates that can then act as strong nucleophiles.It thus serves as a catalyst for Mukaiyama aldol reactions [2] and group-transfer chain-growth polymerization reactions.
In the laboratory, diphenylphosphine is a common intermediate. It can be deprotonated to give diphenylphosphide derivatives: [2] Ph 2 PH + n BuLi → Ph 2 PLi + n BuH. The preparation of phosphine ligands, Wittig-Horner reagents, and phosphonium salts are commonly accomplished by alkylating diphenylphosphine.
Sodium trimethylsilylpropanesulfonate (DSS) is the organosilicon compound with the formula (CH 3) 3 SiCH 2 CH 2 CH 2 SO 3 − Na +. It is the sodium salt of trimethylsilylpropanesulfonic acid. A white, water-soluble solid, it is used as a chemical shift standard for proton NMR spectroscopy of aqueous solutions. [1]