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1,3,5-Triphenyl-1,3,5-diazaphosphinane features a six-membered diazaphosphorinane ring with phenyl groups attached to the phosphorus and nitrogen atoms. The phenyl group on the phosphorus atom predominantly adopts an equatorial orientation, as determined by NMR spectroscopy and dipole moment analysis. This conformational preference is driven by enthalpic factors rather than entropic effects, similar to trends observed in related cyclic compounds like methylcyclohexane and 1,3,5-trimethyl-1,3-diazane. The equatorial positioning minimizes steric interactions and stabilizes the molecular structure.

72897-05-3

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72897-05-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72897-05-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,8,9 and 7 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 72897-05:
(7*7)+(6*2)+(5*8)+(4*9)+(3*7)+(2*0)+(1*5)=163
163 % 10 = 3
So 72897-05-3 is a valid CAS Registry Number.

72897-05-3Relevant academic research and scientific papers

SYNTHESIS AND PROPERTIES OF TRIETHYLAMMONIUM 2,2,5-TRIPHENYL-1,3,2,5-DIOXABORATAPHOSPHORINANE

Nikonov, G. N.,Karasik, A. A.,Arbuzov, B. A.

, p. 1094 - 1099 (2007/10/02)

The reaction of bis(hydroxymethyl)phenylphosphine with isobutyl diphenylborate in the presence of triethylamine leads to the formation of triethylammonium 2,2,5-triphenyl-1,3,2,5-dioxaborataphosphorinane (1).The reaction of compound 1 with electrophilic reagents (O, S, Se, CH2O, RHal) leds to quaternization of the phosphorus atom, giving the corresponding phosphine oxides, sulfides, and selenides and P,B-containing betaines.In the reactions of compound 1 with amines aminomethylphosphines of the diazaphosphorinane and diazadiphosphacyclooctane series are formed.Ammonium 1,3,2,5-dioxaborataphosphorinanes dissociate in solution and enter into ion exchange with phosphonium iodides, leading to phosphonium 1,3,2,5-dioxaborataphosphorinanes.The latter, in the case of the aminomethylphosphonium cation, undergo intramolecular rearrangement with the formation of P,B-containing betaines and aminomethylphosphines. Keywords: Triethylammonium 2,2,5-triphenyl-1,3,2,5-dioxaborataphosphorinane, oxide, sulfide, aminomethylphosphine, ion exchange, triphenylmethylphosphonium 1,3,2,5-dioxaborataphosphorinane.

1.2-DIAZA-4-PHOSPHA-CYCLOPENTANE - 1.5-DIAZA-3.7-DIPHOSPHABICYCLO-OCTANE N.N'--N.N'-DIMETHYLHYDRAZINE 1.3-DIAZA-5-PHOSPHA-CYCLOHEXANE

Maerkl, G.,Jin, G. Yu

, p. 229 - 232 (2007/10/02)

N.N'-Dialkylhydrazines and hydrazine itself react with hydroxymethylphosphines to give the title compounds, bis(anilinomethylen)-phosphines form the cyclohexane-derivatives with formaldehyde.

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