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2 article(s) from Gräßle, Simone

Synthesis of substituted triazole–pyrazole hybrids using triazenylpyrazole precursors

Simone Gräßle,
Laura Holzhauer,
Nicolai Wippert,
Olaf Fuhr,
Martin Nieger,
Nicole Jung and
Stefan Bräse

Beilstein J. Org. Chem. 2024, 20, 1396–1404, doi:10.3762/bjoc.20.121

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Figure 1: Biologically active pyrazole–triazole hybrids 1–4: inhibitory effect on cholera bacteria [13], antimicr...

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Scheme 1: Literature-reported synthetic routes to pyrazole–triazole hybrids: synthesis of azides 7 or 8 from ...

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Scheme 2: Synthesis of pyrazolyl azides 19a–v via cleavage of the protecting triazene moiety. For compounds 1...

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Scheme 3: Synthesis of pyrazole–triazole hybrids via CuAAC and ORTEP diagrams of triazole products 21sd and 2...

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Figure 2: Synthesized triazole–pyrazole hybrids 21aa–vg.

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Scheme 4: One-pot synthesis of triazole–pyrazole hybrid 21gd. ^aOne-pot setup yielded 21gd with unknown impuri...

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Scheme 5: Solid-phase synthesis of azidopyrazole 19g and triazole–pyrazole hybrid 21gd by immobilization of a...

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Published 20 Jun 2024

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Addition of dithi(ol)anylium tetrafluoroborates to α,β-unsaturated ketones

Yu-Chieh Huang,
An Nguyen,
Simone Gräßle,
Sylvia Vanderheiden,
Nicole Jung and
Stefan Bräse

Beilstein J. Org. Chem. 2018, 14, 515–522, doi:10.3762/bjoc.14.37

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Scheme 1: Previously reported procedure for the addition of ketene dithioacetals to α,β-unsaturated ketones [33] ...

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Scheme 2: Addition of dithi(ol)anylium TFBs to α,β-unsaturated non-cyclic ketones.

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Scheme 3: Addition of dithi(ol)anylium TFBs to α,β-unsaturated cyclic ketones.

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Scheme 4: Single versus double addition of ketones to dithiolanylium TFB 1e. ^adr was calculated from the ¹H N...

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Scheme 5: The scope of the presented protocol demonstrated by examples including the use of additional electr...

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Scheme 6: Synthesis of diene dithioacetals 18a and 18b by addition of ynone 17 to α-alkyl or aryl-substitued ...

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Published 26 Feb 2018

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