ChemInform Abstract: Conformational Analysis of 2-Chloro-2-fluoroacetaldehyde and Calculated Transition State Structures of Nucleophilic Addition Reactions.

ChemInform ◽  
2010 ◽  
Vol 26 (10) ◽  
pp. no-no
Author(s):  
G. FRENKING ◽  
K. F. KOEHLER ◽  
M. T. REETZ
1982 ◽  
Vol 47 (3) ◽  
pp. 802-808 ◽  
Author(s):  
Robert Ponec ◽  
Jaroslav Málek

The additions of the methyl radical and hydrogen atom to ethylene were chosen to test the reliability of MINDO method for predicting the transition state structures. It has been shown that the structures obtained at the level of the MINDO method differ markedly from the ab initio calculated structures.


2018 ◽  
Vol 14 ◽  
pp. 1192-1202 ◽  
Author(s):  
Koichi Mitsudo ◽  
Junya Yamamoto ◽  
Tomoya Akagi ◽  
Atsuhiro Yamashita ◽  
Masahiro Haisa ◽  
...  

In this study, six-membered N-acyliminium ions were generated by the “indirect cation pool” method and reacted with several nucleophiles. These reactions afforded disubstituted piperidine derivatives with high diastereoselectivities and good to excellent yields. The conformations of the obtained N-acyliminium ions were studied by low temperature NMR analyses and DFT calculations and were found to be consistent with the Steven’s hypothesis.


Synlett ◽  
2014 ◽  
Vol 25 (13) ◽  
pp. 1863-1868 ◽  
Author(s):  
Fumihiko Yoshimura ◽  
Keiji Tanino ◽  
Taiki Abe

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