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Jerzy W Wiench

from Ames, IA
Age ~58
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Also known as:
Jerzy Witold Wiench, Jerzy E Wiench, Jerry W Wiench
Phone and address:
2605 Southridge Cir, Ames, IA 50014
(515) 296-2346
Related to:
Agnieszka Wiench, 57
Connected to:
Diane M Wiencke, 63Conrad F Wienckowski, 69Craig T Wienclawski, 52Stanley L Wiencus, 84Adam J Wienczkowski, 40April L Wienecke, 36Bonnie M Wienecke, 40Gary E Wienecke, 78Maureen D Wienecke, 69Stefanie M Wienecke, 35

Jerzy Wiench Phones & Addresses

  • 2605 Southridge Cir, Ames, IA 50014 (515) 296-2346
  • 129 Ash Ave, Ames, IA 50014 (515) 296-2346

Education

Degree: Graduate or professional degree

Publications

Us Patents

Solvent-Free Mechanochemical Preparation Of Phosphonium Salts, Phosphorus Ylides, And Olefins

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US Patent:
7105714, Sep 12, 2006
Filed:
Dec 22, 2003
Appl. No.:
10/744932
Inventors:
Vitalij K Pecharsky - Ames IA, US
Viktor P Balema - Ames IA, US
Jerzy W Wiench - Ames IA, US
Marek Pruski - Ames IA, US
Assignee:
Iowa State University Research Foundation, Inc. - Ames IA
International Classification:
C07C 1/207
C07C 2/86
US Classification:
585503, 568 8, 568 9, 560 55, 585600
Abstract:
The present invention provides a method of preparing a phosphonium salt of the formula [RRRP—CRRR]X, comprising ball-milling a phosphine of the formula RRRP with a compound of the formula XCRRR; a method of preparing a phosphorus ylide of the formula RRRP═CRR, comprising ball-milling a phosphonium salt of the formula [RRRP—HCRR]X in the presence of a base; and a method of preparing an olefin of the formula RRC═CRH or RRC═CRR, comprising ball-milling a phosphorus ylide of the formula RRRP═CRRwith a compound of the formula RC(O)H or RC(O)R. The inventive method produces phosphonium salts and phosphorus ylides by mechanical processing solid reagents under solvent-free conditions. The advantages of the present invention over conventional solution methods, include: (1) extremely high selectivity; (2) high yields; (3) low processing temperatures; (4) simple and scalable reactions using commercially available equipment; and (5) the complete elimination of solvents from the reaction.

Solvent-Free Mechanochemical Preparation Of Phosphonium Salts, Phosphorus Ylides, And Olefins

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US Patent:
20030176740, Sep 18, 2003
Filed:
Feb 5, 2003
Appl. No.:
10/358552
Inventors:
Vitalij Pecharsky - Ames IA, US
Viktor Balema - Ames IA, US
Jerzy Wiench - Ames IA, US
Marek Pruski - Ames IA, US
Assignee:
Iowa State University Research Foundation, Inc. - Ames IA
International Classification:
C07F009/02
C07C002/02
US Classification:
568/009000, 585/502000
Abstract:
The present invention provides a method of preparing a phosphonium salt of the formula [RRRP—CRRR]X, comprising ball-milling a phosphine of the formula RRRP with a compound of the formula XCRRR; a method of preparing a phosphorus ylide of the formula RRRP CRR, comprising ball-milling a phosphonium salt of the formula [RRRP—HCRR]X in the presence of a base; and a method of preparing an olefin of the formula RRC CRH or RRC CRR, comprising ball-milling a phosphorus ylide of the formula RRRP CRRwith a compound of the formula RC(O)H or RC(O)R. The inventive method produces phosphonium salts and phosphorus ylides by mechanical processing solid reagents under solvent-free conditions. The advantages of the present invention over conventional solution methods, include: (1) extremely high selectivity; (2) high yields; (3) low processing temperatures; (4) simple and scalable reactions using commercially available equipment; and (5) the complete elimination of solvents from the reaction.
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Jerzy W Wiench from Ames, IA, age ~58 Get Report