A novel type of intramolecular Diels-Alder reaction involving dienol ethers: an unusual preference for a boat transition state in the incipient ring formation

1984 ◽  
Vol 49 (11) ◽  
pp. 2079-2081 ◽  
Author(s):  
Masato Koreeda ◽  
Juan I. Luengo
Keyword(s):  
Transition State ◽  
Alder Reaction ◽  
Diels Alder ◽  
Ring Formation ◽  
Diels Alder Reaction

Ab initio Cs transition state for the Diels-Alder reaction of acetylene and butadiene

1990 ◽  
Vol 55 (12) ◽  
pp. 3804-3807 ◽  
Author(s):  
James M. Coxon ◽  
Stephen T. Grice ◽  
Robert G. A. R. Maclagan ◽  
D. Quentin McDonald
Keyword(s):  
Transition State ◽  
Ab Initio ◽  
Alder Reaction ◽  
Diels Alder ◽  
Diels Alder Reaction

ChemInform Abstract: First Evidence of a Chair-Boat-Boat Transition State in the Transannular Diels-Alder Reaction.

ChemInform ◽  
2010 ◽  
Vol 25 (38) ◽  
pp. no-no
Author(s):  
Y. L. DORY ◽  
C. OUELLET ◽  
S. BERTHIAUME ◽  
A. FAVRE ◽  
P. DESLONGCHAMPS
Keyword(s):  
Transition State ◽  
Alder Reaction ◽  
Diels Alder ◽  
Diels Alder Reaction

Application of numerical basis sets with a family of DFT methods to predict the transition states of Diels-Alder reactions: Assessing the accuracy through synchronous transit method

2017 ◽  
Author(s):  
Saurav Dutta ◽  
Bhabani S. Mallik
Keyword(s):  
Transition State ◽  
Alder Reaction ◽  
Diels Alder ◽  
Computational Method ◽  
Basis Set ◽  
Basis Sets ◽  
Gaussian Basis Sets ◽  
Dft Methods ◽  
Diels Alder Reaction ◽  
Transition State Search

<div> <table> <tr> <td> <p>Knowledge of the transition state is crucial in determining the mechanism in order to diversify the applicability of the reaction. The computational method is the most convenient way to locate the transition state in the absence any efficient experimental technique. We have applied the method of the transition state search on the Diels-Alder reaction computationally by means of combined linear synchronous transit and quadratic synchronous transit methods. Here we have shown that, of various methods adopted, BOP functional with numerical basis set provides a computationally economical alternative to the widely used B3LYP functional with higher Gaussian basis sets in the transition state search. It can reproduce the experimental parameters like activation energy of the Diels-Alder reaction, and the calculations are much faster than the corresponding other functional based calculations.</p> </td> </tr> </table> </div>

Studies on the synthesis of the decahydro-as-indacene ring system of (-)-spinosyn A via transannular Diels-Alder reactions of substituted (E,E,E)-cyclododeca-1,6,8-trienes

2000 ◽  
Vol 78 (6) ◽  
pp. 757-771 ◽  
Author(s):  
Scott A Frank ◽  
Andrea B Works ◽  
William R Roush
Keyword(s):  
Transition State ◽  
Alder Reaction ◽  
Ring System ◽  
Diels Alder ◽  
Tandem Reactions ◽  
Ring Contraction ◽  
Diels Alder Reaction ◽  
Key Features ◽  
Stereoselective Syntheses

Stereoselective syntheses of decahydro-as-indacenes 31 and 54 are reported. The key features of our syntheses of 31 and 54 are the tandem Ireland-Claisen ring contraction of lactones 29 and 38 followed by the transannular Diels-Alder cyclization of cyclododecatrienes 30 and 35. Transition state modeling of both the transannular Diels-Alder reaction and the Ireland-Claisen ring contraction using PCModel is also described.Key words: transannular Diels-Alder reactions, tandem reactions, Claisen ring contraction, Spinosyn A, synthetic study.

Design and synthesis of a transition state analogue for the Diels–Alder reaction

1998 ◽  
Vol 6 (9) ◽  
pp. 1421-1428 ◽  
Author(s):  
Paramjit S. Arora ◽  
Que N. Van ◽  
Michael Famulok ◽  
A.J. Shaka ◽  
James S. Nowick
Keyword(s):  
Transition State ◽  
Alder Reaction ◽  
Diels Alder ◽  
Design And Synthesis ◽  
Diels Alder Reaction ◽  
Transition State Analogue
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