- Hydroamination versus Allylic Amination in Iridium-Catalyzed Reactions of Allylic Acetates with Amines: 1,3-Aminoalcohols via Ester-Directed Regioselectivity
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In the presence of a neutral dppf-modified iridium catalyst and Cs2CO3, linear allylic acetates react with primary amines to form products of hydroamination with complete 1,3-regioselectivity. The collective data, including deuterium labeling studies, corroborate a catalytic mechanism involving rapid, reversible acetate-directed aminoiridation with inner-sphere/outer-sphere crossover followed by turnover-limiting proto-demetalation mediated by amine.
- Kim, Seung Wook,Wurm, Thomas,Brito, Gilmar A.,Jung, Woo-Ok,Zbieg, Jason R.,Stivala, Craig E.,Krische, Michael J.
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supporting information
p. 9087 - 9090
(2018/08/03)
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- 3-[1,4]OXAZEPANE-4-PYRIMIDONE DERIVATIVES
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A compound represented by the formula (I) or a pharmaceutically acceptable salt thereof: wherein Z represents nitrogen atom, C-F or the like; R1 represents a C1-C3 alkyl group; Y represents oxygen atom or N-R7; R2, R3, R4, R5, R6 and R7 each independently represents hydrogen atom, a C1-C6 alkyl group, or a group represented by the formula (II): which is used for preventive and/or therapeutic treatment of a disease caused by tau protein kinase 1 hyperactivity such as a neurodegenerative diseases (e.g. Alzheimer disease).
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Page/Page column 32-33
(2010/11/03)
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- Polymer-supported silyl enol ethers. Synthesis and reactions with imines for the preparation of an amino alcohol library
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Polymer-supported silyl enol ethers (thioketene silyl acetals) were prepared from chloromethyl copoly-(styrene-1%-divinylbenzene) resin. The silyl enol ethers reacted with imines in the presence of a catalytic amount of scandium triflate (Sc(OTf)3) to afford β-amino thioesters, which were reduced to amino alcohols in good yields. These reactions provide a convenient method for the preparation of an amino alcohol library.
- Kobayashi, Shu,Hachiya, Iwao,Suzuki, Shu,Moriwaki, Mitsuhiro
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p. 2809 - 2812
(2007/10/03)
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- Reduction of N-Substituted Azetidin-2-ones to Azetidines
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Reduction of N-substituted azetidin-2-ones to N-substituted azetidines was accomplished rapidly and in good yield with diborane in tetrahydrofuran and with alane in ether.The stereochemistry of the ring substituents was retained under the reaction conditi
- Jackson, Mervyn B.,Mander, Lewis N.,Spotswood, Thomas M.
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p. 779 - 788
(2007/10/02)
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- Synthesis of Phenyl- and Benzyl-Substituted Pyrrolidines and of a Piperidine by Intramolecular C-Alkylation. Synthons for Tricyclic Skeletons
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The construction of new or novelly functionalized annulated and bridged tricyclic compounds by two consecutive C,C-bond formations (a and b in 1a, Scheme 1) is described.In a first step, Chloroalkyl-substituted aminonitriles yielded pyrrolidines 8, 15a, 1
- Achini, Roland
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p. 2203 - 2218
(2007/10/02)
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