Lewis-Acid-Catalyzed Tandem Cyclization by Ring Expansion of Tertiary Cycloalkanols with Propargyl Alcohols

2021 ◽  
Author(s):  
Xue-Song Li ◽  
Xiangtao Kong ◽  
Cui-Tian Wang ◽  
Zhi-Jie Niu ◽  
Wan-Xu Wei ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Ring Expansion ◽  
Acid Catalyzed ◽  
Tandem Cyclization ◽  
Tertiary Cycloalkanols ◽  
Propargyl Alcohols

Lewis acid-catalyzed tandem cyclization of in situ generated o-quinone methides and arylsulfonyl hydrazides for a one-pot entry to 3-sulfonylbenzofurans

2019 ◽  
Vol 6 (24) ◽  
pp. 3929-3933 ◽  
Author(s):  
Fan-Xiao Meng ◽  
Ruo-Nan Wang ◽  
Hong-Li Huang ◽  
Shu-Wen Gong ◽  
Qian-Li Li ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Quinone Methides ◽  
One Pot ◽  
Acid Catalyzed ◽  
Tandem Cyclization ◽  
First Time

Lewis acid-mediated one-pot tandem cyclization of o-QMs with arylsulfonyl hydrazides was described for the first time and the corresponding 3-sulfonylbenzofuran products were obtained in moderate to good yields.

Internal Lewis acid catalyzed ring-expansion reactions of cyclopropylalkanoyl chlorides

1975 ◽  
Vol 16 (35) ◽  
pp. 3031-3034 ◽  
Author(s):  
Michael P. Doyle ◽  
Thomas R. Bade
Keyword(s):  
Lewis Acid ◽  
Ring Expansion ◽  
Acid Catalyzed

Synthesis of Thiazinoimidazoles by Lewis Acid-Catalyzed [3+3] Cycloaddition Reactions of Propargyl Alcohols with 2-Mercaptoimidazoles

2019 ◽  
Vol 2019 (20) ◽  
pp. 3117-3121
Author(s):  
Naoya Mishima ◽  
Takahiro Ogawa ◽  
Genzoh Tanabe ◽  
Osamu Muraoka ◽  
Hiroaki Wasada ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Cycloaddition Reactions ◽  
Acid Catalyzed ◽  
Propargyl Alcohols

Lewis Acid-Catalyzed Stereospecific Ring Expansion of Aziridine-2-carboxylates to Imidazolidin-2-ones.

ChemInform ◽  
2005 ◽  
Vol 36 (43) ◽  
Author(s):  
Min Sung Kim ◽  
Yong-Woo Kim ◽  
Heung Sik Hahm ◽  
Jae Won Jang ◽  
Won Koo Lee ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Ring Expansion ◽  
Acid Catalyzed

scholarly journals Ring-fused cyclobutanes via cycloisomerization of alkylidenecyclopropane acylsilanes

2020 ◽  
Vol 11 (20) ◽  
pp. 5294-5298
Author(s):  
Sarah Eichenberger ◽  
Moritz Hönig ◽  
Matthieu J. R. Richter ◽  
Renana Gershoni-Poranne ◽  
Erick M. Carreira
Keyword(s):  
Lewis Acid ◽  
Ring Expansion ◽  
Acid Catalyzed

A novel Lewis acid-catalyzed cycloisomerization of alkylidenecyclopropane acylsilanes is disclosed that involves tandem Prins addition/ring expansion/1,2-silyl shift to grant access to bicyclo[4.2.0]octanes and bicyclo[3.2.0]heptanes.

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