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Aryl urea derivatives of spiropiperidines as NPY Y5 receptor antagonists.
Direct carboxylation of simple arenes with CO₂ through a rhodium-catalyzed C-H bond activation.
Various arenes such as benzene, toluene, xylene, electron-rich or electron-deficient benzene derivatives, and heteroaromatics are directly carboxylated with high TONs.
Platinum(II)-catalyzed generation and [3+2] cycloaddition reaction of α,β-unsaturated carbene complex intermediates for the preparation of polycyclic compounds.
Pt(II)-catalyzed generation of unsaturated carbene complex intermediates from various propargyl ether derivatives based on electrophilic activation of alkynes was realized, leading to efficient formation of indoles, naphthols, and benzofuran fused with a five-membered ring in high yields.
Nickel-Catalyzed Cross-Electrophile Coupling between Benzyl Alcohols and Aryl Halides Assisted by Titanium Co-reductant.
The treatment of a benzyl alcohol and aryl halide with a nickel catalyst and low-valent titanium reagent generated from TiCl4(lutidine) and manganese powder afforded the cross-coupled product in high yield.
Thermal decomposition of acrylamide from polyacrylamide
Ion-attachment mass spectrometry with a temperature-programed direct probe allows the detection of intact pyrolysis products. It, therefore, offers the opportunity to monitor directly thermal
Design, syntheses, and structure-activity relationships of novel NPY Y5 receptor antagonists: 2-{3-Oxospiro[isobenzofuran-1(3H),4'-piperidin]-1'-yl}benzimidazole derivatives.
By optimizing substituents on the benzimidazole core part of the lead compound 5a, this work was able to develop a potent, orally available, and brain-penetrable Y5 selective antagonist (5k).
Versatile and highly efficient oxidative C(sp3)–H bond functionalization of tetrahydroisoquinoline promoted by bifunctional diethyl azodicarboxylate (DEAD): scope and mechanistic insights
Oxidative C(sp3)–H bond functionalization of the 1-position of tetrahydroisoquinoline (THIQ) derivatives was performed by using diethyl azodicarboxylate (DEAD) as the oxidant. A wide range of
Low-Valent Titanium-Mediated Radical Conjugate Addition Using Benzyl Alcohols as Benzyl Radical Sources.
A concise method to directly generate benzyl radicals from benzyl alcohol derivatives has been developed using a simple and inexpensive combination of TiCl4(collidine) and manganese powder, which facilitated homolytic cleavage of benzylic C-OH bonds.
Synthesis of Sterically Fixed Phytochrome Chromophore Derivatives Bearing a 15 E- Fixed or 15 E- Anti- Fixed CD-Ring Component.
The synthesis of sterically fixed 15 E- fixed 18Et-biliverdin (BV) and15 E- anti-fixed 18ET-BV derivatives is reported, which is the introduction of an sp3 carbon alkyl chain bearing a leaving group at the meso-position of the CD-ring component by using the corresponding Grignard reagents in the presence of LiCl.
Construction of Cyclohepta[b]indoles via Platinum-Catalyzed Intermolecular Formal [4+3]-Cycloaddition Reaction of α,β-Unsaturated Carbene Complex Intermediates with Siloxydienes
Platinum(II)-catalyzed intermolecular formal [4+3]-cycloaddition reaction of α,β-unsaturated carbene complex intermediates with siloxydienes proceeded under mild conditions to give