Unexpected TiIII/Mn-Promoted Pinacol Coupling of Ketones

2009 ◽  
Vol 74 (9) ◽  
pp. 3616-3619 ◽  
Author(s):  
Miguel Paradas ◽  
Araceli G. Campaña ◽  
Rosa E. Estévez ◽  
Luis Álvarez de Cienfuegos ◽  
Tania Jiménez ◽  
...  
Keyword(s):  
Pinacol Coupling

Facile pinacol coupling of aliphatic ketones by Brook rearrangement in the presence of samarium species

2021 ◽  
pp. 153069
Author(s):  
Xincan Wang ◽  
Guanqun Xie ◽  
Yanfei Zhao ◽  
Ke Zheng ◽  
Yanxiong Fang ◽  
...  
Keyword(s):  
Aliphatic Ketones ◽  
Pinacol Coupling ◽  
Brook Rearrangement

scholarly journals Pinacol Coupling of Aromatic Aldehydes using La-Ticl4in CH3COOEt under Ultrasound Irradiation

2006 ◽  
Vol 3 (4) ◽  
pp. 230-235
Author(s):  
Ji-Tai Li ◽  
Xue-Li Sun ◽  
Zhi-Ping Lin ◽  
Tong-Shuang Li
Keyword(s):  
Ethyl Acetate ◽  
Titanium Tetrachloride ◽  
Aromatic Aldehydes ◽  
Ultrasound Irradiation ◽  
Titanium Complex ◽  
Pinacol Coupling ◽  
Low Valent

Titanium tetrachloride can be reduced by lanthanum filings to the corresponding low valent titanium complex, which can induce some aromatic aldehydes to the corresponding pinacols in 28%-97% yields within 10-50 min in ethyl acetate at r.t. under ultrasound irradiation.

ChemInform Abstract: TiCl4-n-Bu4NI as a Reducing Reagent: Pinacol Coupling and Enolate Formation from α-Haloketones.

ChemInform ◽  
2000 ◽  
Vol 31 (49) ◽  
pp. no-no
Author(s):  
Takayuki Tsuritani ◽  
Saeko Ito ◽  
Hiroshi Shinokubo ◽  
Koichiro Oshima
Keyword(s):  
Pinacol Coupling

Vanadium(II)- and Niobium(III)-Induced, Diastereoselective Pinacol Coupling of Peptide Aldehydes to Give aC2-Symmetrical HIV Protease Inhibitor

1996 ◽  
Vol 2 (3) ◽  
pp. 307-315 ◽  
Author(s):  
Bernhard Kammermeier ◽  
Gerhard Beck ◽  
Wolfgang Holla ◽  
Detlev Jacobi ◽  
Bernd Napierski ◽  
...  
Keyword(s):  
Protease Inhibitor ◽  
Hiv Protease ◽  
Hiv Protease Inhibitor ◽  
Pinacol Coupling ◽  
Peptide Aldehydes

Magnesium-Induced Pinacol Coupling of Aromatic Aldehydes and Ketones in Water under Ultrasound.

ChemInform ◽  
2004 ◽  
Vol 35 (17) ◽  
Author(s):  
Ji-Tai Li ◽  
Yan-Jiang Bian ◽  
Shu-Ming Liu ◽  
Tong-Shuang Li
Keyword(s):  
Aromatic Aldehydes ◽  
Pinacol Coupling ◽  
Aldehydes And Ketones

Selective synthetic methods using vanadium-mediated redox reactions

2005 ◽  
Vol 77 (9) ◽  
pp. 1539-1557 ◽  
Author(s):  
Toshikazu Hirao
Keyword(s):  
Lewis Acids ◽  
Redox Reactions ◽  
Radical Reaction ◽  
Redox System ◽  
Synthetic Methods ◽  
Pinacol Coupling ◽  
Oxidative Transformations ◽  
Low Valent

Oxovanadium(V) compounds serve as Lewis acids with oxidation capability and induce one-electron oxidative transformations of organosilicons, organotins, organoaluminums, organoborons, organozincs, and/or their ate complexes. Low-valent vanadium-catalyzed stereoselective reductive transformations, including dehalogenation, pinacol coupling, and the related radical reaction, have been developed by constructing a multicomponent redox system in combination with a coreductant and an additive.

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