The Physical Properties of Some Triazo Compounds. I. Molar Refractions and Parachors<sup>1</sup>

Spauschus, H. O.; Scott, John M.

doi:10.1021/ja01145a070

Cited by 17 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(Phenylimino)tris(dimethylamino)phosphazene 5 was synthesized according to the procedure described in ref . The same procedure was employed for synthesis of (2-chlorophenylimino)tris(dimethylamino)phosphorane 11 (starting compounds: 2-Cl-C 6 H 4 -N 3 ,28 and (Me 2 N) 3 P (Fluka)). The crude product (a brown oil) was distilled to give a yellowish oil (yield 65%, bp 137 °C (0.15 Torr)).…”

Section: Methodsmentioning

confidence: 99%

Self-Consistent Spectrophotometric Basicity Scale in Acetonitrile Covering the Range between Pyridine and DBU

et al. 2000

View full text Add to dashboard Cite

A self-consistent spectrophotometric basicity scale in acetonitrile, including DBU, ten (arylimino)tris(1-pyrrolidinyl)phosphoranes, two (arylimino)tris(dimethylamino)phosphoranes, 2-phenyl-1,1,3, 3-tetramethylguanidine, 1-(2-tolyl)biguanide, benzylamine, two substituted benzimidazoles, pyridine, and ten substituted pyridines, has been created. The span of the scale is almost 12 pK(a) units. Altogether, 29 different bases were studied and 53 independent equilibrium constant measurements were carried out, each describing the relative basicity of two bases. The scale is anchored to the pK(a) value of pyridine of 12.33 that has been measured by Coetzee et al. Comparison of the basicity data of phenyliminophosphoranes and phenyltetramethylguanidines implies that the P=N bond in the (arylimino)tris(1-pyrrolidinyl)phosphoranes involves contribution from the ylidic (zwitterionic) structure analogous to that found in phosphorus ylides.

show abstract

Section: Methodsmentioning

confidence: 99%

Self-Consistent Spectrophotometric Basicity Scale in Acetonitrile Covering the Range between Pyridine and DBU

et al. 2000

View full text Add to dashboard Cite

show abstract

“…For this reason they believe that the parachor, as used by Gibling, can have very little value in the determination of chemical structure. Other workers have concluded that the parachor is unreliable in the solution of structural problems (91,98,107).…”

Section: B Parachorsmentioning

confidence: 99%

The Structure and Properties of the Dialkyl Phosphonates.

Doak¹,

Freedman²

1961

Chem. Rev.

101

View full text Add to dashboard Cite

Synthesen mit Acetylenverbindungen, V. Über die Darstellung von Bi‐[1.2.3‐triazolylen]

Dornow

Rombusch

1958

Chem. Ber.

View full text Add to dashboard Cite

Durch Anlagerung von Azidoverbindungen an Diacetylen-dialkohole konnten in guten Ausbeuten Vertreter der bisher unbekannten Bi-[I .2.3-1 H-triazolyle] dargestellt werden. In einigen Fsllen waren dagegen nur die Mono-triazolyl-Verbindungen zu erhalten. Bisher sind drei Grundtypen von Bitriazolylen bekanntgeworden. Zunachst sind die Bi-[l.2.4-1 H-triazolyle]-(3.3') (I) 2) zu nennen, deren beide Ringe uber C-Atorne miteinander verknupft sind. Das 4-[ 1.2.4-1 H-Triazolyl-(3)]-l.2.4-4H-triazol(II)3) besitzt dagegen eine C -N-Verknupfung. Die Bi-[ 1.2.3-2 H-triazolyle]-(4.4') (III)4) schlieDlich sind die einzigen bisher bekannten vicinalen Bitriazolyl-Verbindungen. R 1 ' I1 R 111 Wir versuchten die Darstellung der bisher unbekannten Bi-[ 1.2.3-1 H-triazolyle] (im folgenden nur als Bi-[I .2.3-triazolyle] bezeichnet) mit C -C-Verknupfung, bei denen sich also die N-Substituenten an einem a u k e n der drei N-Atome befinden.Als Ausgangssubstanzen boten sich die leicht zuganglichen und bestandigen Ciacetylen-dialkohole an. Durch Anlagerung von Azidoverbindungen an diese Diacetylenverbindungen erhofften wir, die gewunschten Bi-[ 1.2.3-triazolyle] zu erhalten, Diese Reaktion gelang uns durch Umsetzung der Komponentenvorwiegend in aromatischen Kohlenwasserstoffenbei erhohter Temperatur in meist guten Ausbeuten. Dabei sind allerdings jeweils genaue Reaktionsbedingungen einzuhalten, da sonst entweder die Ausgangssubstanzen zuriickgewonnen werden oder aber Verharzung eintritt.

show abstract

The Physical Properties of Some Triazo Compounds. I. Molar Refractions and Parachors¹

Cited by 17 publications

References 0 publications

Self-Consistent Spectrophotometric Basicity Scale in Acetonitrile Covering the Range between Pyridine and DBU

Self-Consistent Spectrophotometric Basicity Scale in Acetonitrile Covering the Range between Pyridine and DBU

The Structure and Properties of the Dialkyl Phosphonates.

Synthesen mit Acetylenverbindungen, V. Über die Darstellung von Bi‐[1.2.3‐triazolylen]

Contact Info

Product

Resources

About

The Physical Properties of Some Triazo Compounds. I. Molar Refractions and Parachors1

Cited by 17 publications

References 0 publications

Self-Consistent Spectrophotometric Basicity Scale in Acetonitrile Covering the Range between Pyridine and DBU

Self-Consistent Spectrophotometric Basicity Scale in Acetonitrile Covering the Range between Pyridine and DBU

The Structure and Properties of the Dialkyl Phosphonates.

Synthesen mit Acetylenverbindungen, V. Über die Darstellung von Bi‐[1.2.3‐triazolylen]

Contact Info

Product

Resources

About

The Physical Properties of Some Triazo Compounds. I. Molar Refractions and Parachors¹