- Manganese-Catalyzed Dual-Deoxygenative Coupling of Primary Alcohols with 2-Arylethanols
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Reported herein is a general and efficient dual-deoxygenative coupling of primary alcohols with 2-arylethanols catalyzed by a well-defined Mn/PNP pincer complex. This reaction is the first example of the catalytic dual-deoxygenation of alcohols using a non-noble-metal catalyst. Both deoxygenative homocoupling of 2-arylethanols (17 examples) and their deoxygenative cross-coupling with other primary alcohols (20 examples) proceeded smoothly to form the corresponding alkenes by a dehydrogenation and deformylation reaction sequence.
- Wang, Yujie,Shao, Zhihui,Zhang, Kun,Liu, Qiang
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p. 15143 - 15147
(2018/11/01)
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- Highly Site Selective Formal [5+2] and [4+2] Annulations of Isoxazoles with Heterosubstituted Alkynes by Platinum Catalysis: Rapid Access to Functionalized 1,3-Oxazepines and 2,5-Dihydropyridines
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Platinum-catalyzed formal [5+2] and [4+2] annulations of isoxazoles with heterosubstituted alkynes enabled the atom-economical synthesis of valuable 1,3-oxazepines and 2,5-dihydropyridines, respectively. Importantly, this Pt catalysis not only led to unique reactivity dramatically divergent from that observed under Au catalysis, but also proceeded via unprecedented α-imino platinum carbene intermediates.
- Shen, Wen-Bo,Xiao, Xin-Yu,Sun, Qing,Zhou, Bo,Zhu, Xin-Qi,Yan, Juan-Zhu,Lu, Xin,Ye, Long-Wu
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supporting information
p. 605 - 609
(2017/01/07)
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- Ynol Ethers as Ketene Equivalents in Rhodium-Catalyzed Intermolecular [5 + 2] Cycloaddition Reactions
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The previously unexplored metal-catalyzed [5 + 2] cycloadditions of vinylcyclopropanes (VCPs) and electron-rich alkynes (ynol ethers) have been found to provide a highly efficient, direct route to dioxygenated seven-membered rings, a common feature of num
- Wender, Paul A.,Ebner, Christian,Fennell, Brandon D.,Inagaki, Fuyuhiko,Schr?der, Birte
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supporting information
p. 5810 - 5813
(2017/11/10)
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- Synthesis of ethoxyethynylarenes by the palladium-catalyzed reaction of aryl iodides with ethoxy(trialkylstannyl)acetylenes
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Palladium-catalyzed reaction of aryl and heteroaryl iodides with ethoxy(trialkylstannyl)acetylenes gave the ethoxyethynylarenes and -heteroarenes, which were easily transformed by hydration reaction into ethyl areneacetates and heteroareneacetates.
- Sakamoto,Yasuhara,Kondo,Yamanaka
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p. 2032 - 2035
(2007/10/02)
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- Alkoxyacetylenes from alkyl 1,2-dichlorovinyl ethers
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Alkyl 1,2-dichlorovinyl ethers 4, prepared from sodium alkoxides 1 and trichloroethylene 2, react in tetrahydrofuran with two equivalents of butyllithium to afford lithium alkoxyacetylides 5. On the one hand, these acetylides react with ketones or dichlor
- Loffler,Himbert
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p. 495 - 498
(2007/10/02)
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- Ru-CATALYZED OXIDATION OF SUBSTITUTED ACETYLENES TO α-KETO ESTERS AND α-KETO AMIDES WITH IODOSYLBENZENE
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Oxidation of alkynyl ethers and -amines with iodosylbenzene in presence of Ru-catalysts affords α-keto esters and α-keto amides in 44-84percent yield.These conversions can also be effected with RuO4.
- Mueller, Paul,Godoy, Jose
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p. 3661 - 3664
(2007/10/02)
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