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173166-52-4

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173166-52-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 173166-52-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,1,6 and 6 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 173166-52:
(8*1)+(7*7)+(6*3)+(5*1)+(4*6)+(3*6)+(2*5)+(1*2)=134
134 % 10 = 4
So 173166-52-4 is a valid CAS Registry Number.

173166-52-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name 2,4,6-tritert-butyl-1,3,5-triphosphinine

1.2 Other means of identification

Product number -
Other names 2,4,6-Tri-tert-butyl-1,3,5-triphosphabenzene

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:173166-52-4 SDS

173166-52-4Relevant articles and documents

Hydrogen activation by an aromatic triphosphabenzene

Longobardi, Lauren E.,Russell, Christopher A.,Green, Michael,Townsend, Nell S.,Wang, Kun,Holmes, Arthur J.,Duckett, Simon B.,McGrady, John E.,Stephan, Douglas W.

, p. 13453 - 13457 (2014)

Aromatic hydrogenation is a challenging transformation typically requiring alkali or transition metal reagents and/or harsh conditions to facilitate the process. In sharp contrast, the aromatic heterocycle 2,4,6-tri-tert -butyl-1,3,5-triphosphabenzene is shown to be reduced under 4 atm of H2 to give [3.1.0]bicylo reduction products, with the structure of the major isomer being confirmed by X-ray crystallography. NMR studies show this reaction proceeds via a reversible 1,4-H2 addition to generate an intermediate species, which undergoes an irreversible suprafacial hydride shift concurrent with P - P bond formation to give the isolated products. Further, para-hydrogen experiments confirmed the addition of H2 to triphosphabenzene is a bimolecular process. Density functional theory (DFT) calculations show that facile distortion of the planar triphosphabenzene toward a boat-conformation provides a suprafacial combination of vacant acceptor and donor orbitals that permits this direct and uncatalyzed reduction of the aromatic molecule.

The metal-initiated cyclooligomerization of phospha-alkynes and its consequences [1]

Mack,Tabellion,Peters,Nachbauer,Bergstraesser,Preuss,Regitz

, p. 261 - 264 (2007/10/03)

1,3-Diphosphacyclobutadienes 4 are almost certainly intermediates in the conversion by hexachloroethane of phosphaalkyne dimer complexes 3 to the tetraphosphacubanes 5. We now describe trapping reactions of 4, generated in the same way, wilh phosphaalkyne 1 (→9), ynamines 10 (→13), and electron-poor alkynes 11 (→14). The cyclooligomerization of 1 initiated by t-Bu-N=VCl3·DME (15) leads to the azatetraphosphaquadricyclanes 20 while the reaction with the stronger Lewis acid t-Bu-N=VCl3 (21) furnishes the 1,3,5-triphosphabenzenes 23 in high selectivity.

η8-cyglooctatetraene metal complexes, a new class of templates for phosphaalkyne cyclooligomerizations

Binger, Paul,Glaser, Gerald,Stannek, J?rg,Leininger, Stefan

, p. 149 - 152 (2007/10/03)

For the first time selective cyclodi-, tri-, and tetramerization of phosphaalkynes are induced by an unique class of transition metal complexes by changing the reaction conditions.

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