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Creators/Authors contains: "Seidel, Daniel"

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  1. ; ; ; ; ; ; ; (, ACS Macro Letters)
    Free, publicly-accessible full text available July 15, 2026
  2. ; ; ; ; (, Chemical Science)
    A new conjugate-base-stabilized carboxylic acid containing a 3,5-bis(SF5)phenylthiourea functionality catalyses challenging one-pot condensations/6π-electrocyclizations of hydrazines and α,β-unsaturated ketones. 
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  3. ; ; ; ; (, Synthesis)
    Abstract In the presence of a thiourea–carboxylic acid catalyst, N-9-fluorenyltryptamines undergo highly enantioselective Pictet–Spengler reactions with a range of aldehydes. The reaction works particularly well with aromatic aldehydes, tolerating electronically diverse substituents in all ring positions. Electron-deficient tryptamines are viable substrates. Removal of the fluorenyl protecting group is readily accomplished without deterioration of product ee. 
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  4. ; ; ; ; ; (, Journal of the American Chemical Society)
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  5. ; ; ; ; ; ; ; ; (, ACS Catalysis)
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  6. ; ; ; (, Organic Letters)
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  7. ; ; ; ; (, SynOpen)
    null (Ed.)
    Abstract Amines such as 1,2,3,4-tetrahydroisoquinoline undergo redox­-neutral annulations with ortho-(nitromethyl)benzaldehyde. Benzoic­ acid acts as a promoter in these reactions, which involve concurrent amine α-C–H bond and N–H bond functionalization. Subsequent removal of the nitro group provides access to tetrahydroprotoberberines not accessible via typical redox-annulations. Also reported are decarboxylative annulations of ortho-(nitromethyl)benzaldehyde with proline and pipecolic acid. 
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  8. ; ; ; (, Nature Chemistry)
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  9. ; ; ; ; ; ; ; ; (, Journal of the American Chemical Society)
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  10. ; ; ; (, SynOpen)
    This Short Review provides an analysis of the state-of-the-art in catalytic enantioselective oxa-Pictet–Spengler cyclizations. Also discussed are other catalytic reactions providing access to enantio­enriched isochromans and tetrahydropyrano[3,4-b]indoles. Context is provided and remaining challenges are highlighted. 
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