D. Schmidt

Formation of substituted 2-iminooxazolidines via intermolecular 1,2-addition/intramolecular N-vinylation using 3-substituted-2-bromo-2-propen-1-ols as substrates

Heike Weischedel, D. Schmidt, Jürgen Conrad, Uwe Beifuß

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Study of the 15N(p,n)15O reaction as a monoenergetic neutron source for the measurement of differential scattering cross sections

Erik Poenitz, Roeland J. M. Nolte, D. Schmidt, G. Chen

The 15 N(p,n) reaction is a promising candidate for the production of monoenergetic neutrons with energies of up to 5.7 MeV at the facilities where the T(p,n) 3 He reaction cannot be used. The characteristic properties of this reaction were studied focusing …

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ChemInform Abstract: 2,3‐Dihalo‐1‐propenes as Building Blocks in Cu(I)‐Catalyzed Domino Reactions: Efficient and Selective Synthesis of Furans.

D. Schmidt, Chandi C. Malakar, Uwe Beifuß

Abstract Trisubstituted furans are synthesized in an efficient and selective one‐pot process by reacting dibromopropenes with 1,3‐dicarbonyl compounds.

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2,3-Dihalo-1-propenes as Building Blocks in Cu(I)-Catalyzed Domino Reactions: Efficient and Selective Synthesis of Furans

D. Schmidt, Chandi C. Malakar, Uwe Beifuß

The Cu(I)-catalyzed reaction of 2,3-dibromo-1-propenes with β-ketoesters and 1,3-diketones, respectively, in DMF at 120 °C using Cs2CO3 as a base and hydroquinone as an additive exclusively delivers 2,3,5-trisubstituted furans and related compounds with yields up to 96%. The highly regioselective domino process …

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ChemInform Abstract: Facile Synthesis of 3,5‐Diaryl‐1,2,4‐triazoles via Copper‐Catalyzed Domino Nucleophilic Substitution/Oxidative Cyclization Using Amidines or Imidates as Substrates.

Kavitha Sudleendran, D. Schmidt, Wolfgang U. Frey, Juergen Conrad et autres

Abstract Oxidative Cu‐catalyzed dimerization of arylamidines (I) offers a convenient synthesis of 3,5‐diaryl‐1,2,4‐triazoles (II).

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Facile synthesis of 3,5-diaryl-1,2,4-triazoles via copper-catalyzed domino nucleophilic substitution/oxidative cyclization using amidines or imidates as substrates

Kavitha Sudheendran, D. Schmidt, Wolfgang U. Frey, Jürgen Conrad et autres

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CCDC 962488: Experimental Crystal Structure Determination

Kavitha Sudheendran, D. Schmidt, Wolfgang Frey, Jürgen Conrad et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

ChemInform Abstract: Combination of Enzyme‐ and Lewis Acid‐Catalyzed Reactions: A New Method for the Synthesis of 6,7‐Dihydrobenzofuran‐4(5H)‐ones Starting from 2,5‐Dimethylfuran and 1,3‐Cyclohexanediones.

Chimène Asta, D. Schmidt, Juergen Conrad, Wolfgang U. Frey et autres

Abstract The (Z)‐hexenedione (I), previously obtained by laccase‐promoted cleavage of 2,5‐dimethylfuran undergoes Gd‐catalyzed reaction with diones (II) to form dihydrobenzofurans (III).

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The first enzymatic Achmatowicz reaction: selective laccase-catalyzed synthesis of 6-hydroxy-(2H)-pyran-3(6H)-ones and (2H)-pyran-2,5(6H)-diones

Chimène Asta, D. Schmidt, Jürgen Conrad, Bernhard Förster-Fromme et autres

The laccase-catalyzed oxidation of (5-alkylfuran-2-yl)carbinols using aerial oxygen as an oxidant selectively affords 6-hydroxy-(2H)-pyran-3(6H)-ones with yields up to 90%. With suitable substituted furan-2-yl carbinols as substrates the procedure allows the efficient preparation of (2H)-pyran-2,5(6H)-diones in a single step.

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Combination of enzyme- and Lewis acid-catalyzed reactions: a new method for the synthesis of 6,7-dihydrobenzofuran-4(5H)-ones starting from 2,5-dimethylfuran and 1,3-cyclohexanediones

Chimène Asta, D. Schmidt, Jürgen Conrad, Wolfgang U. Frey et autres

The Lewis acid-catalyzed domino 1,2-addition/1,4-addition/elimination between (Z)-3-hexene-2,5-dione and 1,3-dicarbonyls delivers 3-methyl-6,7-dihydrobenzofuran-4(5H)-ones exclusively with yields up to 82%. The combination of this new process with the laccase-catalyzed formation of (Z)-3-hexene-2,5-dione by oxidative cleavage of 2,5-dimethylfuran allows for the synthesis of 6,7-dihydrobenzofuran-4(5H)-ones starting directly …

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CCDC 926712: Experimental Crystal Structure Determination

Chimène Asta, D. Schmidt, Jürgen Conrad, Wolfgang Frey et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

CCDC 926713: Experimental Crystal Structure Determination

Chimène Asta, D. Schmidt, Jürgen Conrad, Wolfgang Frey et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …