boronic acids
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Catalysts ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 92
Author(s):  
Fernanda Guimarães Torres ◽  
Filipe Simões Teodoro ◽  
Leandro Vinícius Alves Gurgel ◽  
Flavien Bourdreux ◽  
Olfa Zayene ◽  
...  

This work describes the application of raw and chemically modified cellulose and sugarcane bagasse for ipso-hydroxylation of aryl boronic acids in environmentally friendly reaction conditions. The catalytic efficiency of five support-[Cu] materials was compared in forming phenols from aryl boronic acids. Our investigation highlights that the CEDA-[Cu] material (6-deoxy-6-aminoethyleneamino cellulose loaded with Cu) leads to the best results under very mild reaction conditions. The optimized catalytic sequence, allowing a facile transformation of boronic acids to phenols, required the mandatory and joint presence of the support, Cu2O, and KOH at room temperature. CEDA-[Cu] was characterized using 13C solid-state NMR, ICP, and FTIR. The use of CEDA-[Cu] accounts for the efficacious synthesis of variously substituted phenol derivatives and presents very good recyclability after five catalytic cycles.


Author(s):  
Christopher M. Gabriel ◽  
Brian R. Pimentel ◽  
Christian A. Gomez ◽  
Isaiah Cedillo ◽  
Andrew A. Rodriguez

Synthesis ◽  
2022 ◽  
Author(s):  
Jiahui Fu ◽  
Xingxing Cai ◽  
Yihuo Liu ◽  
Jing-Hua Li ◽  
Dongping Cheng ◽  
...  

An efficient visible-light-mediated tandem reaction of acryloylbenzamides with alkyl boronic acids, arylsulfonylhydrazides and oxime esters is developed. The reaction proceeds the radical addition and cyclization to give various isoquinoline-1,3(2H,4H)-diones in satisfactory yields under mild conditions, which provides a good opportunity to discover new meaningful bioactive compounds.


2022 ◽  
Author(s):  
Kohtaro Osakada ◽  
Yasushi Nishihara

The Suzuki–Miyaura reaction (cross-coupling reaction of boronic acids with organic halides catalysed by Pd complexes) has been recognised as the useful synthetic organic reaction that forms a C(sp2)–C(sp2) bond. The...


Author(s):  
Jie Jian ◽  
Roel Hammink ◽  
Christine J. McKenzie ◽  
F. Matthias Bickelhaupt ◽  
Jordi Poater ◽  
...  
Keyword(s):  

2021 ◽  
Author(s):  
Antanas Karalius ◽  
Yunchuan Qi ◽  
Mubarak Ayinla ◽  
Zoltan Szabo ◽  
Olof Ramstrom

Complex dynamic systems displaying interdependency between nitroaldol and boronic ester reactions have been demonstrated. Nitroalkane-1,3-diols, generated by the nitroaldol reaction, were susceptible to ester formation with different boronic acids in aprotic solvents, whereas hydrolysis of the esters occurred in the presence of water. The boronic ester formation led to significant stabilization of the nitroaldol adducts under basic conditions. The use of bifunctional building blocks was furthermore established, allowing for main chain nitroaldol-boronate dynamers as well as complex network dynamers with distinct topologies. The shape and rigidity of the resulting dynamers showed an apparent dependency on the configuration of the boronic acids.


ACS Omega ◽  
2021 ◽  
Author(s):  
Jia-Ju Tao ◽  
Jia-Dong Tang ◽  
Tao Hong ◽  
Jia-Wen Ye ◽  
Jia-Yu Chen ◽  
...  

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