Cinchona Alkaloid Squaramide Catalyzed Enantioselective Hydrazination/Cyclization Cascade Reaction of α-Isocyanoacetates and Azodicarboxylates: Synthesis of Optically Active 1,2,4-Triazolines

2013 ◽  
Vol 78 (18) ◽  
pp. 9377-9382 ◽  
Author(s):  
Mei-Xin Zhao ◽  
Hong-Lei Bi ◽  
Hao Zhou ◽  
Hui Yang ◽  
Min Shi
Keyword(s):  
Cascade Reaction ◽  
Optically Active ◽  
Cinchona Alkaloid

Diastereo- and enantioselective Mannich/cyclization cascade reaction of isocyanoacetates with cyclic sulfamide ketimines by cinchona alkaloid squaramide/AgOAc cooperative catalysis

2018 ◽  
Vol 16 (25) ◽  
pp. 4641-4649 ◽  
Author(s):  
Mei-Xin Zhao ◽  
Zhi-Wen Dong ◽  
Guang-Yu Zhu ◽  
Xiao-Li Zhao ◽  
Min Shi
Keyword(s):  
Cascade Reaction ◽  
Optically Active ◽  
Cinchona Alkaloid ◽  
Cooperative Catalysis ◽  
Mannich Cyclization

This reaction provides facile access to a variety of optically active imidazoline-fused sulfahydantoin derivatives in excellent yields and good to excellent stereoselectivities.

scholarly journals Preparation of optically active bicyclodihydrosiloles by a radical cascade reaction

2013 ◽  
Vol 9 ◽  
pp. 1326-1332 ◽  
Author(s):  
Koichiro Miyazaki ◽  
Yu Yamane ◽  
Ryuichiro Yo ◽  
Hidemitsu Uno ◽  
Akio Kamimura
Keyword(s):  
Silicon Atom ◽  
Cascade Reaction ◽  
Radical Cyclization ◽  
Optically Active ◽  
Unsaturated Ester ◽  
Terminal Alkyne ◽  
Silyl Radical ◽  
Vinyl Radical ◽  
Radical Cascade ◽  
Carbonyl Radical

Bicyclodihydrosiloles were readily prepared from optically active enyne compounds by a radical cascade reaction triggered by tris(trimethylsilyl)silane ((Me3Si)3SiH). The reaction was initiated by the addition of a silyl radical to an α,β-unsaturated ester, forming an α-carbonyl radical that underwent radical cyclization to a terminal alkyne unit. The resulting vinyl radical attacked the silicon atom in an SHi manner to give dihydrosilole. The reaction preferentially formed trans isomers of bicyclosiloles with an approximately 7:3 to 9:1 selectivity.

Cascade bio-hydroxylation and dehalogenation for one-pot enantioselective synthesis of optically active β-halohydrins from halohydrocarbons

2019 ◽  
Vol 21 (16) ◽  
pp. 4324-4328 ◽  
Author(s):  
Hai-Bo Cui ◽  
Ling-Zhi Xie ◽  
Nan-Wei Wan ◽  
Qing He ◽  
Zhi Li ◽  
...  
Keyword(s):  
Cascade Reaction ◽  
Optically Active ◽  
Enantioselective Synthesis ◽  
One Pot

A stereoselective hydroxylation and enantioselective dehalogenation cascade reaction was developed for the synthesis of optically active β-haloalcohols from halohydrocarbons.

Organocatalyzed enantioselective Michael addition/cyclization cascade reaction of 3-isothiocyanato oxindoles with arylidene malonates

2016 ◽  
Vol 14 (47) ◽  
pp. 11250-11260 ◽  
Author(s):  
Raghunath Chowdhury ◽  
Mukesh Kumar ◽  
Sunil K. Ghosh
Keyword(s):  
Michael Addition ◽  
Cascade Reaction ◽  
Cinchona Alkaloid ◽  
Bifunctional Catalysts

Both enantiomers of functionalized 3,2′-pyrrolidinyl spirooxindoles were obtainedviaa Michael-cyclization cascade reaction using pseudoenantiomeric cinchona alkaloid derived thiourea based bifunctional catalysts.

ChemInform Abstract: Production of Optically Active Ketones by a Palladium-Induced Cascade Reaction from Racemic β-Ketoesters.

ChemInform ◽  
2010 ◽  
Vol 25 (50) ◽  
pp. no-no
Author(s):  
S. J. ABOULHODA ◽  
F. HENIN ◽  
J. MUZART ◽  
C. THOREY ◽  
W. BEHNEN ◽  
...  
Keyword(s):  
Cascade Reaction ◽  
Optically Active

Production of optically active ketones by a palladium-induced cascade reaction from racemic β-ketoesters.

1994 ◽  
Vol 5 (7) ◽  
pp. 1321-1326 ◽  
Author(s):  
Said Jamal Aboulhoda ◽  
Françoise Hénin ◽  
Jacques Muzart ◽  
Claire Thorey ◽  
Willi Behnen ◽  
...  
Keyword(s):  
Cascade Reaction ◽  
Optically Active
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