A novel Prins cascade process for the stereoselective synthesis of oxa-bicycles

2015 ◽  
Vol 13 (9) ◽  
pp. 2669-2672 ◽  
Author(s):  
B. V. Subba Reddy ◽  
A. Venkateswarlu ◽  
B. Sridevi ◽  
Kanakaraju Marumudi ◽  
A. C. Kunwar ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Cascade Process ◽  
Mild Conditions ◽  
Excellent Selectivity

E- and Z-9-Methyldeca-3,8-dien-1-ols undergo smooth cyclization with aldehydes in the presence of 20 mol% AgSbF6 under extremely mild conditions to generate the corresponding oxa-bicycles in good yields with excellent selectivity.

Silver-catalyzed formal [3+2]-cycloaddition of α-trifluoromethylated methyl isocyanides: a facile stereoselective synthesis of CF3-substituted heterocycles

2017 ◽  
Vol 53 (16) ◽  
pp. 2427-2430 ◽  
Author(s):  
Xue Zhang ◽  
Xin Wang ◽  
Yuelei Gao ◽  
Xianxiu Xu
Keyword(s):  
Stereoselective Synthesis ◽  
Double Bonds ◽  
Mild Conditions

An Ag-catalyzed formal [3+2]-cycloaddition of α-trifluoromethylated methyl isocyanides with polar double bonds has been developed for the expeditious synthesis of trifluoromethylated oxazolines, imidazolines and pyrrolines under mild conditions.

Cu-Catalyzed hydrophosphorylative ring opening of propargyl epoxides: highly selective access to 4-phosphoryl 2,3-allenols

2016 ◽  
Vol 52 (80) ◽  
pp. 11959-11962 ◽  
Author(s):  
Ruwei Shen ◽  
Jianlin Yang ◽  
Haipeng Zhao ◽  
Yu Feng ◽  
Lixiong Zhang ◽  
...  
Keyword(s):  
Ring Opening ◽  
Cross Coupling ◽  
Mild Conditions ◽  
Selective Access ◽  
Excellent Selectivity

A CuI-catalyzed cross-coupling of propargyl epoxides with P(O)H compounds to produce 4-phosphoryl 2,3-allenols with excellent selectivity under mild conditions is disclosed.

Stereoselective Synthesis of Bicyclic Pyrrolidines by a Rhodium-Catalyzed Cascade Process

2004 ◽  
Vol 43 (48) ◽  
pp. 6713-6716 ◽  
Author(s):  
Ming Yan ◽  
Neil Jacobsen ◽  
Wenhao Hu ◽  
Luisa S. Gronenberg ◽  
Michael P. Doyle ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Cascade Process

ChemInform Abstract: Stereoselective Synthesis of Pseudoglycosides Catalyzed by TeCl4under Mild Conditions.

ChemInform ◽  
2013 ◽  
Vol 44 (20) ◽  
pp. no-no
Author(s):  
Juliano C. R. Freitas ◽  
Tulio R. Couto ◽  
Antonio A. S. Paulino ◽  
Joao R. de Freitas Filho ◽  
Ivani Malvestiti ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Mild Conditions

Stereoselective Synthesis of (E)-Cinnamonitriles with the Sml2/THF/MeOH System

1999 ◽  
Vol 23 (5) ◽  
pp. 342-343
Author(s):  
Hongyun Guo ◽  
Yongmin Zhang
Keyword(s):  
Stereoselective Synthesis ◽  
Mild Conditions

α-Phenylsulfonylcinnamonitriles are readily reduced by Sml2/THF/MeOH to give the corresponding ( E)-cinnamonitriles in good yields under mild conditions.

Binuclear molybdenum alkoxide as the versatile catalyst for the conversion of carbon dioxide

2018 ◽  
Vol 20 (5) ◽  
pp. 989-996 ◽  
Author(s):  
Jing-Huo Chen ◽  
Cheng-Hua Deng ◽  
Sheng Fang ◽  
Jian-Gong Ma ◽  
Peng Cheng
Keyword(s):  
Carbon Dioxide ◽  
High Yield ◽  
Mild Conditions ◽  
Excellent Selectivity

CO2 was transformed into different products in mild conditions with high yield and excellent selectivity using a single catalyst.

A tandem Prins spirocyclization for the stereoselective synthesis of tetrahydrospiro[chroman-2,4′-pyran] derivatives

2016 ◽  
Vol 14 (12) ◽  
pp. 3234-3237 ◽  
Author(s):  
B. V. Subba Reddy ◽  
V. Hanuman Reddy ◽  
Durgaprasad Medaboina ◽  
B. Sridhar ◽  
Y. V. Rami Reddy
Keyword(s):  
Stereoselective Synthesis ◽  
Cascade Process ◽  
Reaction Conditions

A novel cascade process has been developed for the synthesis of tetrahydrospiro[chroman-2,4′-pyran] derivatives by condensation of aldehydes with 2-(5-hydroxy-3-methylenepentyl)phenols using BF3·OEt2 under mild reaction conditions.

Stereoselective synthesis of pseudoglycosides catalyzed by TeCl4 under mild conditions

Tetrahedron ◽  
2012 ◽  
Vol 68 (41) ◽  
pp. 8645-8654 ◽  
Author(s):  
Juliano C.R. Freitas ◽  
Túlio R. Couto ◽  
Antônio A.S. Paulino ◽  
João R. de Freitas Filho ◽  
Ivani Malvestiti ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Mild Conditions

scholarly journals K-10 montmorillonite: An efficient and reusable catalyst for selective oxidation of aldehydes in the presence of dioxygen

2019 ◽  
Vol 8 (5) ◽  
pp. 380-389
Author(s):  
Ikram EL Amrani ◽  
Ahmed Atlamsani
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Selective Oxidation ◽  
Reusable Catalyst ◽  
Good Activity ◽  
Mild Conditions ◽  
Catalyst Temperature ◽  
Clay Catalyst ◽  
Excellent Selectivity

A commercial montmorillonite clay catalyst, K-10 montmorillonite, was tested for catalytic oxidation of aldehydes in the presence of molecular oxygen under mild conditions. K-10 montmorillonite catalysed the oxidation of aldehydes with good activity and excellent selectivity toward the formation of the corresponding acids. The effects of the amount of catalyst, temperature and solvent on the catalytic activity were investigated. Remarkably, this catalyst was reusable without any appreciable loss in activity and selectivity.

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