New entry to a cis-fused bicyclic ring system by a [2,3]sigmatropic rearrangement via cyclic allylsulfonium ylides. Synthesis of the cis-2-oxa-9-vinyldecalin skeleton

1995 ◽  
pp. 2989 ◽  
Author(s):  
Fusao Kido ◽  
Toshiya Abiko ◽  
Michiharu Kato
Keyword(s):  
Ring System ◽  
Sigmatropic Rearrangement ◽  
New Entry

Regiospecific preparation of 10-allyl-1-ketoquinolizidine and an unexpected disproportionation during its Wolff–Kischner reduction

1979 ◽  
Vol 57 (16) ◽  
pp. 2114-2117 ◽  
Author(s):  
John M. McIntosh
Keyword(s):  
Ring System ◽  
Sigmatropic Rearrangement ◽  
High Yield ◽  
Reaction Conditions ◽  
Fused Ring ◽  
Fused Ring System

Regiospecific formation of 10-allyl-1-ketoquinolizidine (7) is achieved in high yield by a [2.3] sigmatropic rearrangement of N-allyl-1-ketoquinolizidinium bromide (6). Wolff–Kischner reduction of 7 affords 10-allylquinolizidine (8) contaminated by the 10-propyl and 10-ethynyl analogs in amounts which depend on the reaction conditions. The carbon-13 spectrum of 8 indicates a trans-fused ring system with an axial substituent at C-10.

Stereoselective Construction of an Unprecedented 7−8 Fused Ring System in Micrandilactone A by [3,3]-Sigmatropic Rearrangement

2008 ◽  
Vol 10 (4) ◽  
pp. 665-668 ◽  
Author(s):  
Yan-Dong Zhang ◽  
Wei-Wu Ren ◽  
Yu Lan ◽  
Qing Xiao ◽  
Kai Wang ◽  
...  
Keyword(s):  
Ring System ◽  
Sigmatropic Rearrangement ◽  
Fused Ring ◽  
Fused Ring System

Enantioselective Construction of a 2,8-Dioxabicyclo[3.2.1]octane Ring System via [2,3]-Sigmatropic Rearrangement of Oxonium Ylide Using Chiral Dirhodium(II) Carboxylates

2009 ◽  
Vol 38 (5) ◽  
pp. 488-489 ◽  
Author(s):  
Naoyuki Shimada ◽  
Seiichi Nakamura ◽  
Masahiro Anada ◽  
Motoo Shiro ◽  
Shunichi Hashimoto
Keyword(s):  
Ring System ◽  
Sigmatropic Rearrangement ◽  
Oxonium Ylide

Studies on the Rh and Ir mediated tandem Pauson–Khand reaction. A new entry into the dicyclopenta[a,d]cyclooctene ring system

2003 ◽  
Vol 44 (32) ◽  
pp. 6165-6168 ◽  
Author(s):  
Hui Cao ◽  
Sreenivasa R. Mundla ◽  
James M. Cook
Keyword(s):  
Ring System ◽  
New Entry

A new entry to the phenanthridine ring system

2012 ◽  
Vol 53 (11) ◽  
pp. 1328-1331 ◽  
Author(s):  
Poulomi Mondal ◽  
Latibuddin Thander ◽  
Shital K. Chattopadhyay
Keyword(s):  
Ring System ◽  
New Entry
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