NaI-catalyzed highly regioselective ring-opening [1 + 2] cycloaddition reaction of cyclopropenes with imines: highly stereoselective synthesis of cis-vinylic aziridines

2005 ◽  
pp. 909 ◽  
Author(s):  
Shengming Ma ◽  
Junliang Zhang ◽  
Lianghua Lu ◽  
Xin Jin ◽  
Yangjun Cai ◽  
...  
Keyword(s):  
Ring Opening ◽  
Stereoselective Synthesis ◽  
Cycloaddition Reaction

scholarly journals A Short Stereoselective Synthesis of Racemic 2-Epicalvine

2010 ◽  
Vol 5 (8) ◽  
pp. 1934578X1000500
Author(s):  
Basem A. Moosa ◽  
Shaikh A. Ali
Keyword(s):  
Natural Product ◽  
Vinyl Ether ◽  
Ring Opening ◽  
Stereoselective Synthesis ◽  
Cycloaddition Reaction ◽  
One Pot ◽  
Ladybird Beetle

The cycloaddition reaction of 6-pentyl-3,4,5,6-tetrahydropyridine 1-oxide with butyl vinyl ether was used as a key step in the short stereoselective racemic synthesis of ladybird beetle alkaloid, 2-epicalvine. The cycloadduct was subjected to quaternization with 2-bromoethanol, followed by ring opening and lactonization to afford the natural product in a one-pot reaction.

scholarly journals Stereoselective Synthesis of Tetraalkyl Cyclobutene-1,2,3,4-tetracarboxylates. Synthesis of Tetraalkyl (Z,Z)-Buta-1,3-diene-1,2,3,4-tetracarboxylates

1999 ◽  
Vol 23 (8) ◽  
pp. 512-513
Author(s):  
Issa Yavari ◽  
Farahnaz Nourmohammadian
Keyword(s):  
Ring Opening ◽  
Wittig Reaction ◽  
Stereoselective Synthesis ◽  
Intramolecular Wittig Reaction ◽  
Ring Opening Reactions ◽  
Boiling Toluene

Tetraalkyl cyclobutene-1,2,3,4-tetracarboxylates, prepared by intramolecular Wittig reaction between a vinylphosphonium salt and diethyl 2-oxobutanedioate, undergo electrocyclic ring-opening reactions, in boiling toluene, to produce highly electron-deficient 1,3-dienes.

Regio- and Stereoselective Synthesis of Spiro-heterocycles Bearing the Pyrazole Scaffold via [3+2] Cycloaddition Reaction

2021 ◽  
pp. 131711
Author(s):  
Mohammad Shahidul Islam ◽  
Matti Haukka ◽  
Saied M. Soliman ◽  
Abdullah Mohammed Al-Majid ◽  
A.F.M.Motiur Rahman ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Cycloaddition Reaction

scholarly journals Stereoselective Synthesis of Tropanes via a 6π‐Electrocyclic Ring‐Opening/ Huisgen [3+2]‐Cycloaddition Cascade of Monocyclopropanated Heterocycles

2020 ◽  
Vol 59 (41) ◽  
pp. 18110-18115
Author(s):  
Carina M. Sonnleitner ◽  
Saerom Park ◽  
Robert Eckl ◽  
Thomas Ertl ◽  
Oliver Reiser
Keyword(s):  
Ring Opening ◽  
Stereoselective Synthesis
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