Metal free chemoselective reduction of α-keto amides using TBAF as catalyst

RSC Advances ◽  
2014 ◽  
Vol 4 (105) ◽  
pp. 61077-61085 ◽  
Author(s):  
N. Chary Mamillapalli ◽  
Govindasamy Sekar
Keyword(s):  
Amino Alcohols ◽  
Keto Group ◽  
Complete Reduction ◽  
Metal Free ◽  
Ligand Free

Metal and ligand free chemoselective reduction of keto group and complete reduction of the both keto and amide groups of α-keto amide with hydrosilanes using tetrabutylammoniumflouride (TBAF) as catalyst have been accomplished. This methodology affords an efficient and economic route for the synthesis of biologically important α-hydroxy amides and β-amino alcohols.

scholarly journals ZnSe quantum dots modified with a Ni(cyclam) catalyst for efficient visible-light driven CO2 reduction in water

2018 ◽  
Vol 9 (9) ◽  
pp. 2501-2509 ◽  
Author(s):  
Moritz F. Kuehnel ◽  
Constantin D. Sahm ◽  
Gaia Neri ◽  
Jonathan R. Lee ◽  
Katherine L. Orchard ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Phosphonic Acid ◽  
Precious Metal ◽  
Co2 Reduction ◽  
Metal Free ◽  
Efficient Reduction ◽  
Ligand Free ◽  
Visible Light Driven

A robust precious metal-free photocatalyst system comprised of ligand-free ZnSe quantum dots and a phosphonic acid-functionalised Ni(cyclam) catalyst achieves efficient reduction of aqueous CO2 to CO.

Metal-Free O -Selective Direct Acylation of Amino Alcohols Through Pseudo-Intramolecular Process

2019 ◽  
Vol 2019 (5) ◽  
pp. 1125-1133
Author(s):  
Soichi Yokoyama ◽  
Hiroshi Shibauchi ◽  
Haruyasu Asahara ◽  
Nagatoshi Nishiwaki
Keyword(s):  
Amino Alcohols ◽  
Metal Free ◽  
Direct Acylation ◽  
Intramolecular Process

The synthesis and properties of iron, ruthenium, and osmium octabutoxynaphthalocyanine

2012 ◽  
Vol 16 (09) ◽  
pp. 1068-1071 ◽  
Author(s):  
Junhwan Kim ◽  
Malcolm E. Kenney
Keyword(s):  
Mass Spectrometry ◽  
Iron Complexes ◽  
Axial Ligand ◽  
Iron Complex ◽  
Free Iron ◽  
Metal Free ◽  
Ligand Free ◽  
The Stability

New series of iron, ruthenium, and osmium octabutoxynaphthalocyanines were synthesized by inserting corresponding metals into the metal-free octabutoxynaphthalocyanine. Although preparation of axial ligand-free iron octabutoxynaphthalocyanines was reported before, we could not reproduce the synthesis by following the reported method. We attributed the failure to the instability of the iron octabutoxynaphthalocyanines. Bis-ligation increased the stability of the iron complex but only sufficiently for characterization. The application of iron complexes will be limited by their instability. However, ruthenium and osmium formed stable complexes with this macrocycle ring but with significantly lower reaction yields. These new complexes were characterized by NMR, UV-vis, and mass spectrometry.

ChemInform Abstract: A Facile and Efficient Synthesis of β-Amino Alcohols Using 2,2,2-Trifluoroethanols as a Metal-Free and Reusable Medium.

ChemInform ◽  
2010 ◽  
Vol 41 (32) ◽  
pp. no-no
Author(s):  
Samad Khaksar ◽  
Akbar Heydari ◽  
Mahmood Tajbakhsh ◽  
Hamid Reza Bijanzadeh
Keyword(s):  
Amino Alcohols ◽  
Efficient Synthesis ◽  
Metal Free

Stereoselective Complete Reduction of α-Alkyl-β-ketonitriles toanti γ-Amino Alcohols

2002 ◽  
Vol 2002 (17) ◽  
pp. 2924-2927 ◽  
Author(s):  
Antonio De Nino ◽  
Renato Dalpozzo ◽  
Giovanna Cupone ◽  
Loredana Maiuolo ◽  
Antonio Procopio ◽  
...  
Keyword(s):  
Amino Alcohols ◽  
Complete Reduction

scholarly journals Transition Metal Free Sandmeyer-Type Reductive Disulfuration of Anilines

2021 ◽  
Author(s):  
Shiqi Chen ◽  
Si Cao ◽  
Chaoyang Liu ◽  
Baoxu Wang ◽  
Xiaorui Ren ◽  
...  
Keyword(s):  
Transition Metal ◽  
Sandmeyer Reaction ◽  
Metal Free ◽  
Mild Conditions ◽  
Broad Scope ◽  
Ligand Free ◽  
Metal Ligand

A transition metal/ligand free disulfuration of anilines with disulfur transfer reagents (dithiosulfonate or tetrasulfide) is reported herein. The reaction, which can be considered as a reductive disulfuration variation of the classic Sandmeyer reaction, is performed under mild conditions and exhibits broad scope across aniline substrate and disulfur transfer reagent classes. The gram-scale synthesis of disulfides is successfully achieved through this method, rendering the approach highly valuable. <br>

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