Catalytic amounts of CBr4 mediated dehydrogenative coupling of isochromans with aromatic ketones

2015 ◽  
Vol 51 (22) ◽  
pp. 4708-4711 ◽  
Author(s):  
Congde Huo ◽  
Mingxia Wu ◽  
Fengjuan Chen ◽  
Xiaodong Jia ◽  
Yong Yuan ◽  
...  
Keyword(s):  
Solvent Free ◽  
Aromatic Ketones ◽  
Aerobic Conditions ◽  
Metal Free ◽  
Dehydrogenative Coupling

In the presence of catalytic amounts of CBr4 (a metal-free mediator), an unexpected oxidative dehydrogenative coupling of isochromans with ketones occurred to construct new Csp3–Csp3 bonds. The reactions were performed under simple solvent-free aerobic conditions.

Iodine catalyzed cross-dehydrogenative C–S coupling by C(sp2)–H bond activation: direct access to aryl sulfides from aryl thiols

2015 ◽  
Vol 17 (7) ◽  
pp. 4068-4072 ◽  
Author(s):  
Santosh Kumar Reddy Parumala ◽  
Rama Krishna Peddinti
Keyword(s):  
Bond Activation ◽  
Molecular Iodine ◽  
Solvent Free ◽  
Direct Access ◽  
Aerobic Conditions ◽  
Green Protocol ◽  
Metal Free ◽  
Aryl Sulfides ◽  
Free Metal

An efficient, simple and facile green protocol for the direct sulfenylation of electron-rich species from readily available aryl thiols with the aid of molecular iodine under solvent-free, metal-free and aerobic conditions provides a variety of aryl sulfides in excellent yields.

scholarly journals Correction: Half-sandwich (η5-Cp*)Rh(iii) complexes of pyrazolated organo-sulfur/selenium/tellurium ligands: efficient catalysts for base/solvent free C–N coupling of chloroarenes under aerobic conditions

2020 ◽  
Vol 18 (25) ◽  
pp. 4872-4872
Author(s):  
Charu Sharma ◽  
Avinash Kumar Srivastava ◽  
Kamal Nayan Sharma ◽  
Raj Kumar Joshi
Keyword(s):  
Solvent Free ◽  
Aerobic Conditions ◽  
Half Sandwich

Correction for ‘Half-sandwich (η5-Cp*)Rh(iii) complexes of pyrazolated organo-sulfur/selenium/tellurium ligands: efficient catalysts for base/solvent free C–N coupling of chloroarenes under aerobic conditions’ by Charu Sharma et al., Org. Biomol. Chem., 2020, 18, 3599–3606, DOI: 10.1039/D0OB00538J.

ChemInform Abstract: A NHC-Involved, Cascade, Metal-Free, and Three-Component Synthesis of 2,3-Diarylated Fully Substituted Furans under Solvent-Free Conditions.

ChemInform ◽  
2012 ◽  
Vol 43 (6) ◽  
pp. no-no
Author(s):  
Chenxia Yu ◽  
Jun Lu ◽  
Tuanjie Li ◽  
Donglin Wang ◽  
Binbin Qin ◽  
...  
Keyword(s):  
Solvent Free ◽  
Metal Free ◽  
Solvent Free Conditions ◽  
Substituted Furans

REACTION OF SOME SALICYL ALDEHYDE DERIVATIVES WITH AMINES ANDPHENYL ACETYLENE

2020 ◽  
Vol 65 (10) ◽  
pp. 61-66
Author(s):  
Trang Nguyen Thi Minh ◽  
Trang Tran Thi Thu ◽  
Hoan Duong Quoc
Keyword(s):  
Coupling Reaction ◽  
Solvent Free ◽  
Metal Free ◽  
Phenyl Acetylene ◽  
A3 Coupling ◽  
Free Metal

Salicylic aldehydes, amine, and phenyl acetylene could react under the solvent-free, metal-free conditions to form propargylamines 1-4 via A3 coupling reaction. The yield of the reaction was up to 83% for 5h. In acetonitrile, the amine became a catalyst to form 6-bromo-3-(5-bromo-2-hydroxybenzyl)-2-phenyl-4Hchromen-4-one (5). Under microwave conditions, it took about 20 min to complete the reaction and gave the same yields as theconventional method. Structures of these compounds were firm with NMR, MS spectra.

Metal-Free Visible-Light-Induced C–H/C–H Cross-Dehydrogenative-Coupling of Quinoxalin-2(H)-ones with Simple Ethers

2018 ◽  
Vol 6 (12) ◽  
pp. 17252-17257 ◽  
Author(s):  
Wei Wei ◽  
Leilei Wang ◽  
Huilan Yue ◽  
Pengli Bao ◽  
Weiwei Liu ◽  
...  
Keyword(s):  
Visible Light ◽  
Metal Free ◽  
Dehydrogenative Coupling

ChemInform Abstract: DIAD-Mediated Metal-Free Cross Dehydrogenative Coupling Between Tertiary Amines and α-Fluorinated Sulfones.

ChemInform ◽  
2013 ◽  
Vol 44 (44) ◽  
pp. no-no
Author(s):  
Weizhou Huang ◽  
Chuanfa Ni ◽  
Yanchuan Zhao ◽  
Jinbo Hu
Keyword(s):  
Tertiary Amines ◽  
Metal Free ◽  
Dehydrogenative Coupling
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