US5051533A
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Prophosphatrane compounds as proton abstracting reagents
Assignee: Iowa State University Research Foundation Inc
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Filing: 1990-04-18
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Granted: 1991-09-24
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Expires: 2010-04-18
Abstract
Abstract Prophosphatrane compounds of the formula ##STR1## are disclosed. These compounds are strong Lewis bases and are useful as proton abstracting reagents.
Inventors
- 👤 John G. Verkade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:10
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6581; C07F9/6584
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
26 words
A prophosphatrane compound of the formula: ##STR7## wherein R, R' and R" are selected from the group of hydrogen, and C 1 to C 8 alkyl.
Claim 2
Dependent Claim
26 words
A prophosphatrane compound of the formula: ##STR7## wherein R, R' and R" are selected from the group of hydrogen, and C 1 to C 8 alkyl.
Claim 3
Dependent Claim
28 words
A prophosphatrane compound of claim 1 wherein each of R, R' and R" are selected from the group consisting of hydrogen and C 1 to C 4 .
Claim 4
Dependent Claim
23 words
A prophosphatrane compound of claim 1 wherein each of R, R' and R" are selected from the group consisting of hydrogen and methyl.
Claim 5
Dependent Claim
15 words
A prophosphatrane compound of claim 3 wherein each of R, R' and R" are methyl.
Claim 6
Dependent Claim
15 words
A prophosphatrane compound of claim 3 wherein each of R, R' and R" are hydrogen.
Claim 7
Independent Claim
71 words
A method of preparing a prophosphatrane compound of the formula: ##STR8## wherein R, R' and R" are selected from the group consisting of hydrogen, and C 1 to C 8 alkyl, said method comprising: (a) reacting trialkyl tris-beta-amino-ethylamine with bis dimethylaminochlorophosphine; and thereafter (b) converting the reaction product of step (a) to a prophosphatrane by reacting the product of step (a) with an organic base in the presence of a solvent.
Claim 8
Independent Claim
71 words
A method of preparing a prophosphatrane compound of the formula: ##STR8## wherein R, R' and R" are selected from the group consisting of hydrogen, and C 1 to C 8 alkyl, said method comprising: (a) reacting trialkyl tris-beta-amino-ethylamine with bis dimethylaminochlorophosphine; and thereafter (b) converting the reaction product of step (a) to a prophosphatrane by reacting the product of step (a) with an organic base in the presence of a solvent.
Claim 9
Dependent Claim
28 words
The method of claim 6 wherein the reaction is conducted in the presence of a solvent selected from the group consisting of chlorinated hydrocarbons, aromatic hydrocarbons and ethers.
Claim 10
Dependent Claim
12 words
The method of claim 6 wherein the solvent is a chlorinated hydrocarbon.
Claim 11
Dependent Claim
11 words
The method of claim 8 wherein the solvent is methylene chloride.
Claim 12
Dependent Claim
14 words
The method of claim 6 wherein the organic base is a strong organic base.
Claim 13
Dependent Claim
14 words
The method of claim 10 wherein the strong organic base is potassium tertiary butoxide.
References Cited (Backward Citations)
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