Wide Range Photodetector Based on Catalyst Free Grown Indium Selenide Microwires

2014 ◽  
Vol 6 (12) ◽  
pp. 9550-9556 ◽  
Author(s):  
Zulfiqar Ali ◽  
Misbah Mirza ◽  
Chuanbao Cao ◽  
Faheem K. Butt ◽  
M. Tanveer ◽  
...  
Keyword(s):  
Indium Selenide ◽  
Catalyst Free ◽  
Wide Range

scholarly journals A novel three-component reaction between isocyanides, alcohols or thiols and elemental sulfur: a mild, catalyst-free approach towards O-thiocarbamates and dithiocarbamates

2019 ◽  
Vol 15 ◽  
pp. 1523-1533 ◽  
Author(s):  
András György Németh ◽  
György Miklós Keserű ◽  
Péter Ábrányi-Balogh
Keyword(s):  
Elemental Sulfur ◽  
Building Blocks ◽  
Reaction Conditions ◽  
One Pot ◽  
Catalyst Free ◽  
Synthetic Procedure ◽  
Three Component Reaction ◽  
Wide Range ◽  
Organic Chemist ◽  
The One

A new multicomponent reaction has been developed between isocyanides, sulfur and alcohols or thiols under mild reaction conditions to afford O-thiocarbamates and dithiocarbamates in moderate to good yields. The one-pot reaction cascade involves the formation of an isothiocyanate intermediate, thus a catalyst-free synthesis of isothiocyanates, as valuable building blocks from isocyanides and sulfur is proposed, as well. The synthetic procedure suits the demand of a modern organic chemist, as it tolerates a wide range of functional groups, it is atom economic and easily scalable.

Catalyst-Free Synthesis of Diastereomerically Pure 3-Sulfonyl­azetidin-2-ones via Microwave-Assisted Tandem Wolff Rearrangement–Staudinger Cycloaddition

Synthesis ◽  
2020 ◽  
Author(s):  
Mikhail Krasavin ◽  
Judith Synofzik ◽  
Olga Bakulina ◽  
Olga Balabas ◽  
Dmitry Dar’in
Keyword(s):  
Drug Design ◽  
Single Crystal ◽  
Wolff Rearrangement ◽  
X Ray ◽  
Design And Optimization ◽  
X Ray Crystallography ◽  
Microwave Assisted ◽  
Catalyst Free ◽  
Relative Stereochemistry ◽  
Wide Range

A wide range of α-diazo-β-ketosulfones have been applied to thermally promoted tandem Wolff rearrangement – Staudinger [2+2] cycloaddition with imines to give polysubstituted β-lactam sulfones. Dia­stereomerically pure syn-diastereomers were obtained in good yields and the relative stereochemistry was confirmed by single-crystal X-ray crystallography. These findings significantly expand the scope of this transformation, in contrast to substantial limitations reported previously. Moreover, this methodology enables flexible exploration of new substitution patterns around the privileged β-lactam core for drug design and optimization.

An atmosphere and light tuned highly diastereoselective synthesis of cyclobuta/penta[b]indoles from aniline-tethered alkylidenecyclopropanes with alkynes

2018 ◽  
Vol 54 (23) ◽  
pp. 2870-2873 ◽  
Author(s):  
Bo Cao ◽  
Yin Wei ◽  
Min Shi
Keyword(s):  
Indole Derivatives ◽  
Diastereoselective Synthesis ◽  
Free Atmosphere ◽  
Catalyst Free ◽  
Wide Range

A catalyst-free atmosphere and light tuned highly diastereoselective synthesis of cyclobuta/penta[b]indoles from aniline-tethered alkylidenecyclopropanes and alkynes was developed, which provided a wide range of cyclobuta- and cyclopenta[b]indole derivatives in good yields.

Michael Addition of Aryl Thiols to 3-(2,2,2-Trifluoroethylidene)Oxindoles under Catalyst-Free Conditions: The Rapid Synthesis of Sulfur-Containing Oxindole Derivatives

2018 ◽  
Vol 42 (4) ◽  
pp. 210-214
Author(s):  
Bo Chen ◽  
Jiaheng Lei ◽  
Junling Zhao
Keyword(s):  
Michael Addition ◽  
Room Temperature ◽  
Rapid Synthesis ◽  
Efficient Catalyst ◽  
Mild Conditions ◽  
Catalyst Free ◽  
Wide Range ◽  
High Yields ◽  
The Michael Addition ◽  
Sulfur Containing

A mild and efficient catalyst-free method for the rapid synthesis at room temperature of 3-thiomethylated oxindole derivatives has been achieved via the Michael addition of aryl thiols to ring and 1-substituted 3-(2,2,2-trifluoroethylidene)oxindoles in dichloromethane. The method was applicable to a wide range of thiols and variously substituted 3-(2,2,2-trifluoroethylidene)oxindoles under mild conditions as demonstrated by the synthesis in high yields with good diastereoselectivities of 30 3-thiomethylated oxindoles bearing a trifluoromethyl group.

Catalyst-free iodine-mediated living radical polymerization under irradiation over a wide visible-light spectral scope

2016 ◽  
Vol 7 (21) ◽  
pp. 3576-3588 ◽  
Author(s):  
Xiaodong Liu ◽  
Lifen Zhang ◽  
Zhenping Cheng ◽  
Xiulin Zhu
Keyword(s):  
Visible Light ◽  
Radical Polymerization ◽  
Living Radical Polymerization ◽  
Led Light ◽  
Catalyst Free ◽  
Wide Range ◽  
Free Iodine ◽  
Methyl Methacrylates

Catalyst-free iodine-mediated photo-induced solution LRP of methyl methacrylates under LED light was successfully established over a wide range of irradiation wavelengths (390–630 nm).

Catalyst-free and solvent-free hydroboration of ketones

2019 ◽  
Vol 43 (27) ◽  
pp. 10744-10749 ◽  
Author(s):  
Weifan Wang ◽  
Man Luo ◽  
Weiwei Yao ◽  
Mengtao Ma ◽  
Sumod A. Pullarkat ◽  
...  
Keyword(s):  
Solvent Free ◽  
Catalyst Free ◽  
Solvent Free Conditions ◽  
Wide Range ◽  
High Yields

The hydroboration of a wide range of ketones with HBpin under catalyst-free and solvent-free conditions was reported in high yields.

scholarly journals A practically simple, catalyst free and scalable synthesis of N-substituted ureas in water

RSC Advances ◽  
2018 ◽  
Vol 8 (38) ◽  
pp. 21585-21595 ◽  
Author(s):  
Lata Tiwari ◽  
Varun Kumar ◽  
Bhuvesh Kumar ◽  
Dinesh Mahajan
Keyword(s):  
Organic Solvent ◽  
Catalyst Free ◽  
Wide Range ◽  
Scalable Synthesis

A wide range of amines can be converted to N-substituted ureas using KOCN and aq. HCl without heating, organic solvent or catalyst.

scholarly journals Catalyst-Free, Metal-Free, and Chemoselective Transamidation of Activated Secondary Amides

Synthesis ◽  
2018 ◽  
Vol 51 (04) ◽  
pp. 921-932 ◽  
Author(s):  
Srinivasan Chandrasekaran ◽  
Rajagopal Ramkumar
Keyword(s):  
Amino Acids ◽  
The Other ◽  
Metal Free ◽  
Mild Conditions ◽  
Catalyst Free ◽  
Wide Range ◽  
Simple Protocol ◽  
Secondary Amides ◽  
Free Metal ◽  
Better Than

A simple protocol, which is catalyst-free, metal-free, and chemoselective, for transamidation of activated secondary amides in ethanol as solvent under mild conditions is reported. A wide range of amines, amino acids, amino alcohols, and the substituents, which are problematic in catalyzed transamidation, are tolerated in this methodology. The transamidation reaction was successfully extended to water as the medium as well. The present methodology appears to be better than the other catalyzed transamidations reported recently.

Photoinduced catalyst-free deborylation–deuteration of arylboronic acids with D2O

2020 ◽  
Vol 22 (19) ◽  
pp. 6323-6327 ◽  
Author(s):  
Yatao Lang ◽  
Xiangjun Peng ◽  
Chao-Jun Li ◽  
Huiying Zeng
Keyword(s):  
Arylboronic Acids ◽  
Mild Conditions ◽  
Catalyst Free ◽  
Wide Range ◽  
High Level

Novel photoinduced catalyst-free deborylation–deuteration of arylboronic acids with D2O under mild conditions is reported. A wide range of deuterated products were obtained in good yields with a high level of deuteration.

Radical Cyclization of Olefinic Amides through α-C(sp3)–H Functionalization of Ketones under Catalyst-, Ligand-, and Base-Free Conditions

Synlett ◽  
2021 ◽  
Author(s):  
Yiping Ruan ◽  
Hongxin Liu ◽  
Wen-Ting Wei ◽  
Fu-Hua Qin ◽  
Qing-Qing Kang ◽  
...  
Keyword(s):  
Functional Group ◽  
Free Ligand ◽  
Radical Cyclization ◽  
Mechanistic Study ◽  
Tert Butyl ◽  
Catalyst Free ◽  
Wide Range ◽  
Ligand Free ◽  
First Time ◽  
Carbonyl Radical

AbstractA new, efficient, and practical radical cyclization of olefinic amides with ketones through α-C(sp3)–H functionalization in the presence of tert-butyl peroxybenzoate (TBPB) is described for the first time. This protocol assembles a wide range of pivotal and useful benzoxazines in good to excellent yields under mild, catalyst-free, ligand-free, and base-free conditions with wide functional group tolerance. Moreover, the mechanistic study indicates that the α-carbonyl radical is involved in this transformation.

Sign in / Sign up

Export Citation Format

Share Document