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Iron-catalyzed oxidative tandem reactions with TEMPO oxoammonium salts: synthesis of dihydroquinazolines and quinolines.
A straightforward iron-catalyzed divergent oxidative tandem synthesis of dihydroquinazolines and quinolines from N-alkylanilines using a TEMPO oxoammonium salt as a mild and nontoxic oxidant has beenExpand
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Catalyzed selective direct α- and γ-alkylation of aldehydes with cyclic benzyl ethers by using T(+)BF4- in the presence of an inexpensive organic acid or anhydride.
The cross dehydrogenative coupling (CDC) of cyclic benzyl ethers with aliphatic and α,β-unsaturated aldehydes has been developed. The mild reaction conditions, in which an N-oxoammonium salt derivedExpand
  • 72
Metal-Free Oxidative C(sp3)–H Bond Couplings as Valuable Synthetic Tools for C–C Bond Formations
Metal-free oxidative methods for the direct functionalization of C(sp 3)–H bonds to form new C–C bonds remain challenging. In this article, previous and recent results, the latter devoted toExpand
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Synthesis of chiral cyclic nitrones by asymmetric addition of β-ketosulfones to nitroalkenes followed by reductive cyclization.
The first organocatalytic addition of β-ketosulfones to nitroalkenes catalyzed by thiourea cinchona alkaloids is presented. The readily obtained addition products were selectively transformed intoExpand
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Highly enantioselective synthesis of chiral 7-ring O- and N-heterocycles by a one-pot nitro-Michael-cyclization tandem reaction.
A concise enantioselective approach to synthesise medium-sized 7-ring O- and N-heterocycles has been developed. The synthetic strategy relies on an organocatalytic nitro-Michael-nitrile oxideExpand
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The first organocatalytic asymmetric synthesis of 3-substituted isoindolinones
Herein we describe the first asymmetric organocatalytic synthesis of 3-substituted isoindolinones in a convenient aldol-cyclization-rearrangement tandem reaction of malonates withExpand
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Catalyzed Selective Direct α‐ and γ‐Alkylation of Aldehydes with Cyclic Benzyl Ethers by Using T+BF‐4 in the Presence of an Inexpensive Organic Acid or Anhydride.
The reaction of the cyclic benzyl ethers with various carbonyl compounds as aldehydes, ketones and α,β-unsaturated aldehydes applies oxoammonium salt TBF as the formal hydrogen acceptor and Cu(OTf)2Expand
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The First Organocatalytic Asymmetric Synthesis of 3‐Substituted Isoindolinones.
Isoindolines are obtained with moderate to good enantiomeric excesses from organocatalytic aldol-cyclization-rearrangement tandem reaction of malonates with 2-cyanobenzaldehydes.
Iron‐Catalyzed Oxidative Tandem Reactions with TEMPO Oxoammonium Salts: Synthesis of Dihydroquinazolines and Quinolines.
This method uses a TEMPO oxoammonium salt (TBF) as a mild and nontoxic oxidant with readily available iron salts as catalysts for the synthesis of the title compounds.