Room-Temperature Pd-Catalyzed Methoxycarbonylation of Terminal Alkynes with High Branched Selectivity Enabled by Bisphosphine-Picolinamide Ligand

2022 ◽  
Author(s):  
Liu Ding ◽  
Miaolin Ke ◽  
Tong Ru ◽  
Yingtang Ning ◽  
Fen-Er Chen
Keyword(s):  
Room Temperature ◽  
Terminal Alkynes

Catalytic carbonylations of alkynes under mild temperatures remain a challenge and an opportunity for these industrially important transformations. Herein, we report the room-temperature Pd-catalyzed methoxycarbonylation with high branched selectivity using...

Room-Temperature Hydrohydrazination of Terminal Alkynes Catalyzed by Saturated Abnormal N-Heterocyclic Carbene-Gold(I) Complexes

2014 ◽  
Vol 20 (23) ◽  
pp. 6844-6848 ◽  
Author(s):  
Rubén Manzano ◽  
Thomas Wurm ◽  
Frank Rominger ◽  
A. Stephen K. Hashmi
Keyword(s):  
Room Temperature ◽  
Terminal Alkynes

Visible light-promoted copper catalyzed regioselective acetamidation of terminal alkynes by arylamines

2020 ◽  
Vol 22 (4) ◽  
pp. 1164-1170 ◽  
Author(s):  
V. Kishore Kumar Pampana ◽  
Arunachalam Sagadevan ◽  
Ayyakkannu Ragupathi ◽  
Kuo Chu Hwang
Keyword(s):  
Visible Light ◽  
Molecular Oxygen ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Light Irradiation ◽  
Terminal Alkynes

Herein, we describe a copper photoredox catalyzed synthesis of acetamide via regioselective C–N coupling of arylamines with terminal alkynes using molecular oxygen (O2) as an oxidant at room temperature under visible light irradiation (47 examples).

Exploring the Influence of Phosphine Ligation on the Gold-Catalyzed Hydrohydrazination of Terminal Alkynes at Room Temperature

2017 ◽  
Vol 36 (13) ◽  
pp. 2470-2475 ◽  
Author(s):  
Nicolas L. Rotta-Loria ◽  
Alicia J. Chisholm ◽  
Preston M. MacQueen ◽  
Robert McDonald ◽  
Michael J. Ferguson ◽  
...  
Keyword(s):  
Room Temperature ◽  
Terminal Alkynes

Nickel-Catalyzed Direct Alkylation of Terminal Alkynes at Room Temperature: A Hemilabile Pincer Ligand Enhances Catalytic Activity

ACS Catalysis ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1164-1171 ◽  
Author(s):  
Pablo M. Pérez García ◽  
Peng Ren ◽  
Rosario Scopelliti ◽  
Xile Hu
Keyword(s):  
Catalytic Activity ◽  
Room Temperature ◽  
Terminal Alkynes ◽  
Pincer Ligand

Synthesis of Unsymmetrical 1,3-Diynes via Pd/Cu-Catalyzed Cross-Coupling of Terminal Alkynes at Room Temperature

2016 ◽  
Vol 34 (9) ◽  
pp. 895-900 ◽  
Author(s):  
Yashuai Liu ◽  
Ping Liu ◽  
Ningning Gu ◽  
Jianwei Xie ◽  
Yan Liu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Cross Coupling ◽  
Terminal Alkynes

Novel Diastereoselective Synthesis of 1-Trimethylgermyl-1-alkenes by Hydrolysis of α-Trimethylgermylzirconacyclopentenes

2020 ◽  
Vol 5 (2) ◽  
pp. 161-163
Author(s):  
Narayan G. Bhat ◽  
Maria Villarreal
Keyword(s):  
Low Temperature ◽  
Spectral Data ◽  
Room Temperature ◽  
Nitrogen Atmosphere ◽  
Terminal Alkynes ◽  
Diastereoselective Synthesis ◽  
Butyl Lithium ◽  
Hydrolysis Of

1-Trimethyl-1-germylalkynes were synthesized by deprotonation of terminal alkynes with n-butyl lithium at low temperature followed by treatment with trimethylgermyl chloride under nitrogen atmosphere. The reagent system Cp2ZrCl2/2EtMgBr converts 1-trimethylgermyl-1-alkynes into α- trimethylgermylzirconacyclopentenes at -78 ºC for 1 h followed by stirring at room temperature overnight. These novel intermediates are hydrolyzed at 0 ºC for an hour to provide the corresponding (Z)-1-trimethylgermyl-1-alkenes in good yields (74-85%) and in high stereochemical purities (> 98%) as evidenced by 13C spectral data.

CsF-promoted carboxylation of aryl(hetaryl) terminal alkynes with atmospheric CO2 at room temperature

2017 ◽  
Vol 41 (17) ◽  
pp. 9250-9255 ◽  
Author(s):  
B. Yu ◽  
P. Yang ◽  
X. Gao ◽  
Z. Z. Yang ◽  
Y. F. Zhao ◽  
...  
Keyword(s):  
Room Temperature ◽  
Atmospheric Co2 ◽  
Terminal Alkynes

A CsF-promoted carboxylation of aryl(hetaryl) terminal alkynes with atmospheric CO2 in the presence of trimethylsilylacetylene at room temperature was developed.

A facile one-step synthesis of star-shaped alkynyl carbonates from CO2

2015 ◽  
Vol 51 (56) ◽  
pp. 11225-11228 ◽  
Author(s):  
Rebecca Shu Hui Khoo ◽  
Agnes Mei Xian Lee ◽  
Pierre Braunstein ◽  
T. S. Andy Hor ◽  
He-Kuan Luo
Keyword(s):  
Room Temperature ◽  
Terminal Alkynes ◽  
One Step

The synthesis of new star-shaped compounds containing three or six pendant carbonates with terminal alkynes at 1 atm CO2 and room temperature.

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