Study on the synthesis and properties of (18) -and (30) -annulene desivatives

• Project/Area Number: 08640684
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Organic chemistry
• Research Institution: Osaka University
• Principal Investigator: UEDA Ikuo Osaka University, The Institute of Scientific and Industrial Research, Professor, 産業科学研究所, 教授 (60191912)
• Project Period (FY): 1996 – 1997
• Project Status: Completed (Fiscal Year 1997)
• Budget Amount: ¥2,200,000 (Direct Cost: ¥2,200,000); Fiscal Year 1997: ¥900,000 (Direct Cost: ¥900,000); Fiscal Year 1996: ¥1,300,000 (Direct Cost: ¥1,300,000)
• Keywords: (18) annulene / (30) annulene / D_<6h>-symmetry / benzene higher analog / acetylenic bond / cumulenic bond / aromaticity / ドデカデヒドロ[18]アヌレン / テトラコサデヒドロ[30]アヌレン / D_<6h>対称 / 反磁性環電流

Research Abstract

Dodecadehydro [18] -and tetracosadehydro [30] annulenes (1 and 2) have been prepared. The molecular structure of 1 was determined by X-ray crystallography, which showed that 1 have a planar pi-system with D_<6h>-symmetry. The spectral data indicate that 1 have high thermal and conformational stability and a strong diamagnetic induced ring-current.

Research Products

• [Publications] Riho Suzuki: "Synthesis,Structure and Properties of 3,9,15-Tri-and 3,6,9,12,15,18-Hexasubstituted Dodecadehydro [18] annulenes (C_<18>H_3R_3 and C_<18>R_6) with D_<6h>-Symmetry." Tetrahedron. 54・11. 2477-2496 (1998)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Riho Suzuki: "Synthesis, Structure and Properties of 3,9,15-Tri-and 3,6,12,15,18-Hexasubstitutedm Dodecadehydro [18] -annulenes (C_<18>H_3R_3 and C_<18>R_6) with D_<6h>-Synmmetry." Tetrahedron. 54, No 11. 2469-2477 (1998)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Riho Suzuki: "Synthesis,Structure and Properties of 3,9,15-Tri-and 3,6,9,12,15,18-Hexasubstituted Dodecadehydro[18]annulenes (C_<18>H_3R_3 and C_<18>R_6) with D_<6h>-Symmetry." Tetrahedron. 54・11. 2477-2496 (1998)