- Aromatic aldehyde-selective aldol addition with aldehyde-derived silyl enol ethers
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The aldol reaction using aldehyde-derived silyl enolates as nucleophiles with aromatic aldehydes chemoselectively proceeded in the presence of silyl triflate and 2,2′-bipyridyl to produce β-siloxy aldehydes, while the aliphatic aldehydes were completely recovered. The unprecedented chemoselectivities depend on the reactivities of the pyridinium-type intermediates derived from the aromatic and aliphatic aldehydes.
- Kawajiri, Takahiro,Ohta, Reiya,Fujioka, Hiromichi,Sajiki, Hironao,Sawama, Yoshinari
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supporting information
p. 374 - 377
(2018/02/27)
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- Diarylrhodates as promising active catalysts for the arylation of vinyl ethers with grignard reagents
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Anionic diarylrhodium complexes, generated by reacting [RhCl(cod)] 2 with 2 equiv of aryl Grignard reagents, were found to be effective active catalysts in cross-coupling reactions of vinyl ethers with aryl Grignard reagents, giving rise to the production of vinyl arenes. In this catalytic system, vinyl-O bonds were preferably cleaved over Ar-O or Ar-Br bonds. A lithium rhodate complex was isolated, and its crystal structure was determined by X-ray crystallography.
- Iwasaki, Takanori,Miyata, Yoshinori,Akimoto, Ryo,Fujii, Yuuki,Kuniyasu, Hitoshi,Kambe, Nobuaki
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supporting information
p. 9260 - 9263
(2014/07/21)
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- STEREO- AND REGIOSELECTIVE FORMATION OF SILYL ENOL ETHERS VIA OXIDATION OF VINYL ANIONS
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Oxidation of E- and Z-vinyl lithiums with silyl peroxides 5 affords silyl enol ethers 3 in good to excellent yield with retention of configuration.This methodology represents a useful new procedure for the stereo and regioselective synthesis of ketone eno
- Davis, Franklin A.,Lal, Sankar G.,Wei, Jia
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p. 4269 - 4272
(2007/10/02)
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- Co2(CO)8 CATALYZED REACTIONS OF STYRENE OXIDE WITH TRIALKYLSILANES
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The dicobalt octacarbonyl catalyzed reaction of styrene oxide with trialkylsilanes yields a mixture of 1-phenyl-2-trialkylsiloxyethane and Z- and E-1-phenyl-2-trialkylsiloxyethene.The ratio of these products can be controlled.
- Kang, Kyung-Tae,Weber, William P.
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p. 5415 - 5416
(2007/10/02)
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