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Gulevskaya AV, Tonkoglazova DI. Alkyne‐based syntheses of carbo‐ and heterohelicenes. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Affiliation(s)
- Yun Shen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Graduate School, Chinese Academy of Sciences, Beijing 100049, China
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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Andronova A, Szydlo F, Teplý F, Tobrmanová M, Volot A, Stará IG, Starý I, Rulíšek L, Šaman D, Cvačka J, Fiedler P, Vojtíšek P. The quest for alternative routes to racemic and nonracemic azahelicene derivatives. ACTA ACUST UNITED AC 2009. [DOI: 10.1135/cccc2008180] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A series of diverse aromatic azadienetriyne and azatriynes was synthesised. These compounds were subjected to transition metal-mediated [2+2+2] cycloisomerisation to form pentacyclic or hexacyclic helically chiral azahelicene or azahelicene-like structures mostly in moderate yields. Introducing stereogenic centre(s) into selected azatriynes, cyclisation proceeded in a stereoselective fashion providing aza[5]helicenes or aza[6]helicene-like compounds in up to a 100:0 diastereomeric ratio. Gibbs energy differences between corresponding pairs of diastereomers (calculated at the DFT(B3LYP)/TZV+P level) were in good agreement with the experimental data and allowed for the prediction of the stereochemical outcome of the reaction. This study presents for the first time asymmetric synthesis of azahelicene derivatives in high optical purities.
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Sehnal P, Krausová Z, Teplý F, Stará IG, Starý I, Rulíšek L, Šaman D, Císařová I. On the Origin of Diastereoselectivity in [2 + 2 + 2] Cycloisomerization of Chiral Triynes: Controlling Helicity of Helicene-like Compounds by Thermodynamic Factors. J Org Chem 2008; 73:2074-82. [DOI: 10.1021/jo701997p] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Petr Sehnal
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Albertov 2030, 128 40 Prague 2, Czech Republic
| | - Zuzana Krausová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Albertov 2030, 128 40 Prague 2, Czech Republic
| | - Filip Teplý
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Albertov 2030, 128 40 Prague 2, Czech Republic
| | - Irena G. Stará
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Albertov 2030, 128 40 Prague 2, Czech Republic
| | - Ivo Starý
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Albertov 2030, 128 40 Prague 2, Czech Republic
| | - Lubomír Rulíšek
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Albertov 2030, 128 40 Prague 2, Czech Republic
| | - David Šaman
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Albertov 2030, 128 40 Prague 2, Czech Republic
| | - Ivana Císařová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic, and Department of Inorganic Chemistry, Charles University, Albertov 2030, 128 40 Prague 2, Czech Republic
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