Cihangir Tanyeli

E-mail

tanyeli@metu.edu.tr

Department

Department of Chemistry

ORCID

0000-0003-2270-8635

Scopus Author ID

7004054020

Web of Science Researcher ID

AAG-4533-2019

Enantioselective Addition of 1,3,5,7-Tetramethyl-BODIPYs to Isatins by Bifunctional Quinine-Based Squaramides Dündar, Esra; Isik, Murat; Yıldırım, Erol; Tanyeli, Cihangir (2025-01-01) This work describes the development of the first enantioselective addition reaction between 1,3,5,7-tetramethyl-BODIPYs and isatin derivatives. The reaction utilizes bifunctional quinine/squaramide organocatalysts and affo...
Computational Identification of Potential Organocatalysts (CIPOC) Reveals a 2-aminoDMAP/Urea Catalyst Superior to Its Thiourea Analogue Alsancak-Koca, Sezen; Çamlısoy, Yeşim; Bakırcı, İrem; Işık, Murat; Çelebi-Ölçüm, Nihan; Tanyeli, Cihangir (2025-01-01) Asymmetric organocatalysis by bifunctional acid- and base-type small organic molecules has emerged as a promising way to enhance stereoselective organic transformations since the beginning of this millennium. Takemoto’s te...
Asymmetric Synthesis of Trifluoromethyl Substituted Spiro[Indoline‐3,4′‐Pyrano[2,3‐c]Pyrazole] Derivatives with Organocatalysts Özcan, Bilge Deniz; Kömüşdoğan, Ezgi Bayer; Şahin, Ertan; Tanyeli, Cihangir (2024-02-01) Spirocyclic compounds have always attracted attention due to their presence as a structural core in a wide variety of natural and bioactive molecules and to exhibit pharmaceutical proper ties. An asymmetric synthesis of ...
Multicomponent synthesis of stereogenic-at-boron fluorophores (BOSPYR) from boronic acids, salicylaldehydes, and 2-formylpyrrole hydrazones Bayer, Ezgi; Batool, Sania; ŞAHİN, Ertan; Yıldırım, Erol; Işık, Murat; Tanyeli, Cihangir (2024-01-01) This work describes one-step syntheses of various stereogenic-at-boron fluorochromes (BOSPYR) via multicomponent reactions involving readily accessible boronic acids, salicylaldehydes, and 2-formylpyrrole hydrazones. The d...
Organocatalytic enantioselective synthesis of dihydronaphthofurans and dihydrobenzofurans: reaction development and insights into stereoselectivity Susam, Zeynep Dilşad; Ozcan, Bilge Deniz; Kurtkaya, Enis; Yıldırım, Erol; Tanyeli, Cihangir (2022-10-01) Squaramide/cinchona alkaloid-derived bifunctional organocatalysts are in high demand in asymmetric transformations. Bifunctional quinine-derived sterically encumbered squaramide (H-bond donor) organocatalysts were used to ...
A boron dipyrromethene chiral at boron and carbon with a bent geometry: synthesis, resolution and chiroptical properties Işık, Murat; Dündar, Esra; ŞAHİN, Ertan; Tanyeli, Cihangir (2022-06-01) © 2022 The Royal Society of Chemistry.We report a boron dipyrromethene that is chiral at boron and carbon (B*C*-BODIPY) and accessible through a two-pot, one-step synthesis—an interrupted Knoevenagel condensation. The elec...
Enantioselective synthesis of 2,3-dihydrofurans using a bifunctional quinine/squaramide organocatalyst Susam, Zeynep Dilşad; Gundogdu, Gulsum; Tanyeli, Cihangir (2021-11-01) Asymmetric organocatalytic domino type Michael-S(N)2 reactions give access to enantiomerically enriched dihydrofuran derivatives that can be used as valuable chiral building blocks. A variety of alpha-bromonitroalkenes and...
Recyclable Organocatalysts in Asymmetric Synthesis Susam, Zeynep Dilşad; Tanyeli, Cihangir (2021-05-01) Chiral organocatalysts are extensively in demand over the past 30 years for the synthesis of asymmetric compounds with remarkable stereoselectivities in high yields. In addition to these great facilities, they are eco-frie...
The synthesis of chiral β-naphthyl-β-sulfanyl ketones via enantioselective sulfa-Michael reaction in the presence of a bifunctional cinchona/sulfonamide organocatalyst Tözendemir, Deniz; Tanyeli, Cihangir (2021-02-01) Cinchona alkaloid-derived organocatalysts are widely employed in various asymmetric transformations, yielding products with high enantiopurity. In this respect, a bifunctional quinine-derived sulfonamide organocatalyst was...
Enantioselective Friedel-Crafts alkylation of indole with nitroalkenes in the presence of bifunctional squaramide organocatalysts Dündar, Esra; Tanyeli, Cihangir (2021-01-01) A series of chiral bifunctional quinine and 2-aminoDMAP based squaramide organocatalysts are evaluated in Friedel-Crafts alkylation of indoles with nitroolefins. These 3-substituted indole derivatives are synthesized in th...

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