A new approach to the stereoselective synthesis of trans-3-carbamoyl-β-lactam moieties

2017 ◽  
Vol 41 (6) ◽  
pp. 2479-2489 ◽  
Author(s):  
Anna Zakaszewska ◽  
Ewelina Najda-Mocarska ◽  
Sławomir Makowiec
Keyword(s):  
Stereoselective Synthesis ◽  
Optically Active ◽  
Thermal Generation ◽  
New Approach

Optically active 1,4-disubstituted-3-carbamoyl-azetidinones are synthesized from 5-[(N-arylamino)(hydroxyl)methylene]-2,2-dimethyl-1,3-dioxa-4,6-diones and chiral aldimines via thermal generation of carbamoyl ketenes and subsequent [2+2] cycloaddition.

New Approach to the Theory of Circular Dichroism

1998 ◽  
Vol 63 (8) ◽  
pp. 1187-1201 ◽  
Author(s):  
Jaroslav Zamastil ◽  
Lubomír Skála ◽  
Petr Pančoška ◽  
Oldřich Bílek
Keyword(s):  
Electromagnetic Wave ◽  
Circular Dichroism ◽  
Electromagnetic Waves ◽  
Maxwell Equations ◽  
Optically Active ◽  
Semiclassical Approach ◽  
New Approach ◽  
Isotropic Media ◽  
New Formula ◽  
Circular Dichroïsm

Using the semiclassical approach for the description of the propagation of the electromagnetic waves in optically active isotropic media we derive a new formula for the circular dichroism parameter. The theory is based on the idea of the time damped electromagnetic wave interacting with the molecules of the sample. In this theory, the Lambert-Beer law need not be taken as an empirical law, however, it follows naturally from the requirement that the electromagnetic wave obeys the Maxwell equations.

Stereoselective synthesis of optically active cyclopenta[c]pyridines and tetrahydropyridines

2012 ◽  
Vol 23 (9) ◽  
pp. 662-669 ◽  
Author(s):  
Serdar Sezer ◽  
Yasemin Gümrükçü ◽  
İrem Bakırcı ◽  
M. Yağız Ünver ◽  
Cihangir Tanyeli
Keyword(s):  
Stereoselective Synthesis ◽  
Optically Active

Synthesis and Selected Transformation of Optically Active Cyclopentenyl Sulfoxides: New Approach to Optically Active Cyclopentenones.

ChemInform ◽  
2007 ◽  
Vol 38 (27) ◽  
Author(s):  
W. H. Midura ◽  
J. Krysiak ◽  
M. W. Wieczorek ◽  
A. Filipczak
Keyword(s):  
Optically Active ◽  
New Approach

Enantioselective synthesis of 1-aryl-2-propenylamines: a new approach to a stereoselective synthesis of the Taxol® side chain

2004 ◽  
Vol 15 (6) ◽  
pp. 941-949 ◽  
Author(s):  
Daniele Castagnolo ◽  
Silvia Armaroli ◽  
Federico Corelli ◽  
Maurizio Botta
Keyword(s):  
Stereoselective Synthesis ◽  
Enantioselective Synthesis ◽  
Side Chain ◽  
New Approach

A new approach to the stereoselective synthesis of C-nucleosides via homolytic heteroaromatic substitution

1992 ◽  
Vol 33 (49) ◽  
pp. 7575-7578 ◽  
Author(s):  
Elena Vismara ◽  
Giangiacomo Torri ◽  
Nadia Pastori ◽  
Marco Marchiandi
Keyword(s):  
Stereoselective Synthesis ◽  
New Approach
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