A Carbon-Carbon Bond Formation by the Reaction of 4-Chloro-6-methyl-3-phenylethynyl-2H-pyran-2-one with Active Methylene Derivatives

Heterocycles ◽  
1996 ◽  
Vol 42 (2) ◽  
pp. 789 ◽  
Author(s):  
Yutaka Azuma ◽  
Atsuko Sato ◽  
Mieko Morone
RSC Advances ◽  
2019 ◽  
Vol 9 (69) ◽  
pp. 40455-40461
Author(s):  
Caicai Jiao ◽  
Lilong Gao ◽  
Bing Yu ◽  
Hailin Cong ◽  
Youqing Shen

Active methylene-based polyaddition and polyalkylation catalyzed via an organic superbase were studied in a high-throughput parallel synthesizing instrument.


1979 ◽  
Vol 20 (27) ◽  
pp. 2525-2528 ◽  
Author(s):  
Takamasa Iimori ◽  
Yasushi Nii ◽  
Toshio Izawa ◽  
Susumu Kobayashi ◽  
Masaji Ohno

1992 ◽  
Vol 57 (13) ◽  
pp. 3551-3557 ◽  
Author(s):  
Hiroshi Nishino ◽  
Hironori Kamachi ◽  
Harumi Baba ◽  
Kazu Kurosawa

2018 ◽  
Author(s):  
Mohit Kapoor ◽  
Pratibha Chand-Thakuri ◽  
Michael Young

Carbon-carbon bond formation by transition metal-catalyzed C–H activation has become an important strategy to fabricate new bonds in a rapid fashion. Despite the pharmacological importance of <i>ortho</i>-arylbenzylamines, however, effective <i>ortho</i>-C–C bond formation from C–H bond activation of free primary and secondary benzylamines using Pd<sup>II</sup> remains an outstanding challenge. Presented herein is a new strategy for constructing <i>ortho</i>-arylated primary and secondary benzylamines mediated by carbon dioxide (CO<sub>2</sub>). The use of CO<sub>2</sub> is critical to allowing this transformation to proceed under milder conditions than previously reported, and that are necessary to furnish free amine products that can be directly used or elaborated without the need for deprotection. In cases where diarylation is possible, a chelate effect is demonstrated to facilitate selective monoarylation.


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