ChemInform Abstract: AMINOPHOSPHONIC ACIDS. PART VIII. APPLICATION OF TRICHLOROACETONITRILE FOR PREPARATION OF α-AMINOPHOSPHONIC ACID MONOESTERS

1977 ◽  
Vol 8 (7) ◽  
pp. no-no
Author(s):  
C. WASIELEWSKI ◽  
M. HOFFMANN ◽  
E. WITKOWSKA ◽  
J. RACHON
Keyword(s):  
Aminophosphonic Acid ◽  
Aminophosphonic Acids

Aminophosphonates and aminophosphonic acids with tetrasubstituted stereogenic center: diastereoselective synthesis from cyclic ketimines

2019 ◽  
Vol 17 (31) ◽  
pp. 7352-7359 ◽  
Author(s):  
Jakub Iwanejko ◽  
Anna Brol ◽  
Bartłomiej M. Szyja ◽  
Marek Daszkiewicz ◽  
Elżbieta Wojaczyńska ◽  
...  
Keyword(s):  
Diastereoselective Synthesis ◽  
Aminophosphonic Acid ◽  
Aminophosphonic Acids ◽  
Stereogenic Center ◽  
Derivatives Of

Chiral tetrasubstituted aminophosphonic acid derivatives of hexahydroquinoxalin-2(1H)-one were synthesised via diastereoselective hydrophosphonylation of corresponding imines with tris(trimethylsilyl)phosphite as phosphorus nucleophile.

scholarly journals Laser production of gas phase complexes of metalα-aminophosphonic acid mixtures and their role in chiral recognition

2001 ◽  
Vol 3 (4) ◽  
pp. 217-221 ◽  
Author(s):  
A. Paladini ◽  
C. Calcagni ◽  
T. Di. Palma ◽  
M. Satta ◽  
M. Speranza ◽  
...  
Keyword(s):  
Gas Phase ◽  
Phosphonic Acid ◽  
Chiral Recognition ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Collision Induced Dissociation ◽  
Spectral Features ◽  
Aminophosphonic Acid ◽  
Aminophosphonic Acids ◽  
Fragmentation Patterns

Clusters between first-group metal ions and chiralα-aminophosphonic acids have been readily generated by Pulsed Laser Ablation (PLA) and by Electrospray Ionization (ESI) and their fragmentation investigated by mass spectrometry. The complexes studied have the general formula[Me(I)Cl2]+, where Me(I) is H, Li, Na, or K, C is (R)-(—)-(1-aminoethyl) phosphonic acid(ER)and (S)-(+)-(1-aminoethyl) phosphonic acid(ES),(1R)-(+)-(1-amino-2-methylpropyl) phosphonic acid(PR)and (1S)-(—)-(1-amino-2-methylpropyl) phosphonic acid(PS),(1R)-(-)-(1-amino-hexyl) phosphonic acid (HR) and (1S)-(+)-(1-amino-hexyl) phosphonic acid (HS), o-phospho-L-serine (SS)ando-phospho-D-serine(SR), and L is a referenceα-aminophosphonic acid (E, P, H or S) of defined configuration. Collision induced dissociation (CID) of diastereomeric[Me(I)Cl2]+complexes leads to fragmentation patterns characterized by[Me(I)Cl]+/[Me(I)L2]+abundance ratios which depend upon the configuration of solute C. These different spectral features were correlated to the different stability of the diastereomeric[Me(I)CRL]+and[Me(I)CSL]+complexes in the gas phase.

scholarly journals α-(Imino)pyridyldifluoroethyl Phosphonates: Novel Promising Building Blocks in Synthesis of Biorelevant Aminophosphonic Acids Derivatives

Organics ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 72-83
Author(s):  
Oksana M. Shavrina ◽  
Lyudmyla V. Bezgubenko ◽  
Andrii V. Bezdudny ◽  
Petro P. Onys’ko ◽  
Yuliya V. Rassukana
Keyword(s):  
Carbon Atom ◽  
Building Blocks ◽  
Synthetic Approach ◽  
Phosphonic Acids ◽  
Aminophosphonic Acids ◽  
Convenient Synthetic Approach

A convenient synthetic approach to previously unknown NH-iminophosphonates bearing 2-, 3-, and 4-pyridyldifluoromethyl groups at the imine carbon atom was developed. The synthetic potential of these novel building blocks was demonstrated by their conversion into highly functionalized acyclic and heterocyclic aminophosphonates and phosphonic acids combining in their structure biorelevant aminophosphonic fragment, difluoromethyl group, and pyridyl, piperidyl, thiazolidin-4-one, or thiazidinan-4-one heterocyclic moieties in a single molecular platform.

Nucleophilic Additions toN-Glycosylnitrones. Asymmetric Synthesis of ?-Aminophosphonic Acids

1985 ◽  
Vol 68 (6) ◽  
pp. 1730-1747 ◽  
Author(s):  
Rolf Huber ◽  
Andreas Knierzinger ◽  
Jean-Pierre Obrecht ◽  
Andrea Vasella
Keyword(s):  
Asymmetric Synthesis ◽  
Nucleophilic Additions ◽  
Aminophosphonic Acids

ChemInform Abstract: Camphor-Based Chiral Auxiliary: Formal Synthesis of Enantiomerically Enriched β-Aminophosphonic Acids via PTC Alkylation.

ChemInform ◽  
2001 ◽  
Vol 32 (39) ◽  
pp. no-no
Author(s):  
Giancarlo Cravotto ◽  
Giovanni B. Giovenzana ◽  
Roberto Pagliarin ◽  
Giovanni Palmisano ◽  
Massimo Sisti
Keyword(s):  
Chiral Auxiliary ◽  
Formal Synthesis ◽  
Aminophosphonic Acids
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