Cyclization of isoprenoid compounds Communication 8. Mechanism of the stereospecific cyclization of geranylacetone

1963 ◽  
Vol 12 (10) ◽  
pp. 1636-1642 ◽  
Author(s):  
V. A. Smit ◽  
A. V. Semenovskii ◽  
B. A. Rudenko ◽  
V. F. Kuchetov
Keyword(s):  
Stereospecific Cyclization

Nonenzymic biogenetic-like olefinic cyclizations. Stereospecific cyclization of dienic acetals

1973 ◽  
Vol 95 (8) ◽  
pp. 2656-2663 ◽  
Author(s):  
Arne. Van der Gen ◽  
Koenraad. Wiedhaup ◽  
Johann. Swoboda ◽  
Harmon C. Dunathan ◽  
William S. Johnson
Keyword(s):  
Stereospecific Cyclization

Stereospecific Cyclization Strategies for α,ε-Dihydroxy-β-amino Esters: Asymmetric Syntheses of Imino and Amino Sugars

2014 ◽  
Vol 79 (20) ◽  
pp. 9686-9698 ◽  
Author(s):  
Stephen G. Davies ◽  
Emma M. Foster ◽  
James A. Lee ◽  
Paul M. Roberts ◽  
James E. Thomson
Keyword(s):  
Amino Sugars ◽  
Asymmetric Syntheses ◽  
Amino Esters ◽  
Stereospecific Cyclization

A stereospecific cyclization catalyzed by an antibody

Science ◽  
1987 ◽  
Vol 237 (4818) ◽  
pp. 1041-1043 ◽  
Author(s):  
A. Napper ◽  
S. Benkovic ◽  
A Tramontano ◽  
R. Lerner
Keyword(s):  
Stereospecific Cyclization

Arylallyl cations and their stereospecific cyclization to bicyclic trienylic cations

1982 ◽  
Vol 60 (24) ◽  
pp. 2993-3004 ◽  
Author(s):  
D. M. Dytnerski ◽  
K. Ranganayakulu ◽  
B. P. Singh ◽  
T. S. Sorensen
Keyword(s):  
Nmr Spectroscopy ◽  
Strong Acid ◽  
Ring Closure ◽  
Cyclization Reaction ◽  
Stereospecific Cyclization

A series of arylallyl alcohols, where aryl = 2,6-dimethylphenyl, mesityl, duryl, or pentamethylphenyl, was prepared. On addition to strong acid, these generate arylallyl cations. In some cases these allyl cations are observable and were characterized as insitu solution species by nmr spectroscopy. In other cases, an immediate cyclization takes place, leading stereospecifically to a series of bicyclic trienyl cations, which were also thoroughly characterized. The stereochemistry of this cyclization reaction, which was initially expected to follow the "rules" for electrocyclic ring closures, was probed in some detail. It is tentatively concluded that the stereochemistry in the products is not that expected from a conrotatory ring closure. Two diarylmethyl cations were also prepared. However, these did not cyclize.

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