Synlett 2009(3): 384-389  
DOI: 10.1055/s-0028-1087554
LETTER
© Georg Thieme Verlag Stuttgart ˙ New York

Thieme Chemistry Journal Awardees - Where are They Now? Synthesis of p-Phenylene Ethynylene Based Macrocycles and Bimacrocycle through Formation of the Imine Bond

Liu-Gang Wang, Zhan-Ting Li*
State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
Fax: +86(21)64166128; e-Mail: ztli@mail.sioc.ac.cn;
Further Information

Publication History

Received 20 October 2008
Publication Date:
21 January 2009 (online)

Abstract

This paper describes the synthesis of three monomacrocycles and one bimacrocycle from two p-phenylene ethynylene frameworks. For two of the monomacrocycles, the two frameworks were linked by an amide unit and the macrocyclization involved the intramolecular formation of one imine bond. For another monomacrocycle and the bimacrocycle, the frameworks contained two and three amino or aldehyde units, respectively, and the macrocyclization involved the intermolecular formation of two and three imine bonds.

    References and Notes

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11

Analytical Data Compound 12: Pale yellow oil. ¹H NMR (300 MHz, CDCl3): δ = 0.82 (t, J = 6.9 Hz, 3 H), 1.09-1.24 (m, 10 H), 1.46 (t, J = 6.6 Hz, 2 H), 1.55 (s, 9 H), 3.78 (t, J = 6.6 Hz, 2 H), 6.86 (d, J = 8.4 Hz, 1 H), 6.97 (t, J = 7.5 Hz, 1 H), 7.28 (d, J = 8.1 Hz, 2 H), 7.39-7.52 (m, 5 H), 7.58 (d, J = 7.5 Hz, 1 H), 7.65 (q, 1 H), 7.80 (d, J = 8.4 Hz, 2 H), 7.96-7.99 (m, 1 H), 8.18 (d, J = 8.4 Hz, 1 H), 8.93 (d, J = 1.5 Hz, 1 H), 9.24 (s, 1 H), 9.86 (s, 1 H). ¹³C NMR (100.4 MHz, CDCl3): δ = 13.9, 22.4, 25.6, 28.1, 28.517, 28.9, 29.0, 31.4, 68.7, 80.6, 83.0, 88.3, 94.0, 96.1, 110.7, 111.3, 115.0, 117.3, 119.1, 121.9, 122.4, 123.5, 127.6, 127.7, 128.9, 129.1, 129.3, 129.7, 130.7, 131.6, 132.7, 133.1, 136.2, 136.9, 137.4, 139.2, 147.7, 152.3, 164.7, 190.9. ESI-MS: m/z 691.2 [M + Na]+. ESI-HRMS: m/z calcd for C43H44N2O5Na [M + Na]+: 691.31424; found: 691.3137.
Compound 22: Pale yellow sticky solid. ¹H NMR (300 MHz, CDCl3): δ = 0.83 (t, J = 6.0 Hz, 3 H), 1.22-1.33 (m, 8 H), 1.41-1.48 (m, 2 H), 1.54 (s, 9 H), 1.87 (q, J = .2 Hz, 2 H), 4.10 (t, J = 6.6 Hz, 2 H), 6.90 (d, J = 9.0 Hz, 1 H), 6.98 (t, J = 7.5 Hz, 1 H), 7.31 (td, J 1 = 7.9 Hz, J 2 = 1.2 Hz, 1 H), 7.37 (dd, J 1 = 7.2 Hz, J 2 = 0.9 Hz, 1 H), 7.49-7.55 (m, 3 H), 7.60 (s, 1 H), 7.65-7.68 (m, 2 H), 7.71-7.74 (t, 2 H), 7.86 (d, J = 7.5 Hz, 1 H), 8.00 (s, 1 H), 8.06 (dd, J 1 = 6.0 Hz, J 2 = 3.0 Hz, 1 H), 8.21 (d, J = 11.4 Hz, 1 H), 8.82 (s, 1 H), 9.96 (s,
1 H). ¹³C NMR (100.4 MHz, CDCl3): δ = 14.0, 22.6, 25.9, 28.4, 29.0, 29.2, 29.3, 31.8, 69.2, 80.8, 88.7, 89.3, 92.0, 94,5, 111.4, 112.5, 113.0, 117.7, 119.1, 122.0, 122.0, 123.2, 124.4, 129.5, 129.5, 129.7, 130.0, 130.7, 130.9, 131.4, 133.0, 133.5, 136.6, 136.7, 137.0, 139.8, 152.7, 156.6, 164.5, 191.0. ESI-MS: m/z = 691.2 [M + Na]+, 707.1 [M + K]+. ESI-HRMS: m/z calcd for C43H44N2O5Na [M + Na]+: 691.31424; found: 691.3140.
Compound 26: Orange solid; mp 71-72 ˚C. ¹H NMR (300 MHz, CDCl3): δ = 0.89 (t, J = 6.9 Hz, 3 H), 1.29-1.54 (m, 10 H), 1.87 (q, J = 6.6 Hz, 2 H), 4.12 (t, J = 6.6 Hz, 2 H), 7.00 (d, J = 9.0 Hz, 1 H), 7.44 (td, J 1 = 7.2 Hz, J 2 = 1.2 Hz, 1 H), 7.53-7.63 (m, 2 H), 7.70 (dd, J 1 = 9.0 Hz, J 2 = 2.4 Hz, 1 H), 7.94 (d, J = 7.5 Hz, 1 H), 8.02 (d, J = 2.1 Hz, 1 H), 10.48 (s, 1 H), 10.61 (s, 1 H). ¹³C NMR (100.4 MHz, CDCl3): δ = 14.0, 22.6, 25.9, 28.9, 29.1, 29.2, 31.7, 68.9, 84.5, 95.0, 112.8, 114.6, 124.8, 126.6, 127.3, 128.5, 131.7, 133.1, 133.7, 135.7, 138.7, 161.6, 188.8, 191.5. MS (EI): m/z = 362 [M]+. Anal. Calcd for C24H26O3: C, 79.53; H, 7.23. Found: C, 79.49; H, 7.07.
Compound 28: Pale brown solid; mp 96-97 ˚C. ¹H NMR (300 MHz, CDCl3): δ = 0.89 (t, J = 6.6 Hz, 3 H), 1.29-1.49 (m, 10 H), 1.82 (q, J = 6.9 Hz, 2 H), 3.83 (br, 2 H), 4.00 (t, J = 6.6 Hz, 2 H), 4.25 (br, 2 H), 6.70-6.74 (m, 3 H), 6.88-6.93 (m, 2 H), 7.11 (td, J 1 = 7.8 Hz, J 2 = 1.5 Hz, 1 H), 7.33 (d, J = 7.8 Hz, 1 H). ¹³C NMR (100.4 MHz, CD3OD): δ = 14.5, 23.8, 27.3, 30.5, 30.6, 33.1, 69.5, 84.7, 96.2, 109.8, 112.3, 115.6, 116.9, 118.6, 118.9, 123.4, 130.2, 132.7, 138.0, 148.8, 149.8. ESI-MS: m/z = 337.1 [M + H]+. ESI-HRMS: m/z calcd for C22H29N2O [M]+: 337.22744; found: 337.2283.
Compound 43: Yellow solid; mp 153-154 ˚C. ¹H NMR (300 MHz, CDCl3): δ = 0.89 (t, J = 6.6 Hz, 3 H), 1.25-1.39 (m,
8 H), 1.45-1.54 (m, 2 H), 1.88 (q, J = 6.6 Hz, 2 H), 4.13 (t, J = 6.6 Hz, 2 H), 7.02 (d, J = 8.7 Hz, 1 H), 7.50 (t, J = 7.8 Hz, 1 H), 7.59-7.68 (m, 3 H), 7.70-7.75 (m, 2 H), 7.97 (d, J = 7.8 Hz, 1 H), 8.03 (d, J = 2.1 Hz, 1 H), 8.10 (d, J = 1.5 Hz, 1 H), 10.48 (s, 1 H), 10.59 (s, 1 H), 10.61 (s, 1 H). ¹³C NMR (100.4 MHz, CDCl3): δ = 14.5, 22.6, 26.0, 28.9, 29.2, 29.2, 31.7, 69.0, 84.4, 87.8, 94.5, 97.3, 112.9, 114.3, 122.8, 124.9, 125.8, 126.7, 127.6, 129.2, 130.6, 131.9, 133.3, 133.4, 133.8, 135.7, 135.9, 136.2, 138.8, 161.8, 188.7, 190.5, 191.2. Anal. Calcd for C33H30O4: C, 80.79; H, 6.16. Found: C, 80.63; H, 6.22. MS (MALDI-TOF): m/z = 491.0 [M + H]+. HRMS (MALDI-TOF): m/z calcd for C33H31O4: 491.2217; found: 491.2218.

14

Analytical Data Compound 1: Pale yellow solid; mp 261-262 ˚C. ¹H NMR (300 MHz, CDCl3): δ = 0.90 (t, J = 6.3 Hz, 3 H), 1.25-1.48 (m, 10 H), 1.83-1.78 (m, 2 H), 4.04 (t, J = 6.6 Hz, 2 H), 6.86 (d, J = 8.4 Hz, 1 H), 7.19-7.29 (m, 2 H), 7.35 (t, J = 7.5 Hz, 1 H), 7.40-7.50 (m, 3 H), 7.55 (d, J = 1.2 Hz, 1 H), 7.58 (s, 1 H), 7.60-7.66 (t, 3 H), 7.74 (s, 1 H), 8.61 (s, 1 H), 8.65 (s, 1 H), 8.68 (d, J = 1.8 Hz, 1 H). ¹³C NMR (100.4 MHz, CDCl3): δ = 14.1, 22.7, 26.1, 29.1, 29.3, 29.3, 31.7, 68.7, 87.8, 93.7, 111.4, 116.0, 118.3, 118.7, 121.6, 123.9, 125.9, 126.0, 126.4, 127.5, 127.9, 128.4, 128.6, 128.9, 129.8, 130.6, 131.2, 131.9, 132.2, 133.6, 136.8, 149.7, 152.8, 159.5, 166.4. MS (MALDI-TOF): m/z = 551.2 [M + H]+. HRMS (MALDI-TOF): m/z calcd for C38H35N2O2 [M + H]+: 551.2693; found: 551.2704.
Compound 2: Pale yellow solid; mp 270-272 ˚C. ¹H NMR (300 MHz, CDCl3): δ = 0.87 (t, J = 7.2 Hz, 3 H), 1.25-1.41 (m, 10 H), 1.88 (p, J = 7.5 Hz, 2 H), 4.08 (t, J = 6.9 Hz, 2 H), 6.94 (d, J = 9.0 Hz, 1 H), 7.19-7.25 (m, 2 H), 7.38 (dt, J 1 = 7.8 Hz, J 2 = 1.5 Hz, 1 H), 7.52-7.56 (m, 3 H), 7.58-7.60 (m, 2 H), 7.68-7.74 (m, 3 H), 8.27-8.33 (m, 2 H), 8.58 (s,
1 H), 8.73 (s, 1 H), 9.45 (s, 1 H). ¹³C NMR (100.4 MHz, CDCl3): δ = 14.1, 22.7, 26.0, 29.2, 29.3, 29.4, 31.8, 69.4, 88.2, 91.5, 91.8, 96.3, 100.4, 113.3, 113.6, 117.3, 119.0, 119.3, 122.5, 122.7, 126.2, 126.3, 129.0, 129.1, 129.2, 129.4, 130.9, 131.0, 131.1, 131.4, 131.7, 134.5, 134.8, 137.0, 152.5, 155.9, 158.3, 163.4. MS (MALDI-TOF): m/z = 551.0 [M + H]+. HRMS (MALDI-TOF): m/z calcd for C38H35N2O2 [M + H]+: 551.2693; found: 551.2698. Compound 3: Pale brown solid; mp 226-227 ˚C. ¹H NMR (300 MHz, CDCl3): δ = 0.89 (t, J = 2.2 Hz, 6 H), 1.26-1.56 (m, 20 H), 1.83 (p, J = 6.6 Hz, 2 H), 1.91 (p, J = 6.6 Hz, 2 H), 4.03 (t, J = 6.6 Hz, 2 H), 4.11 (t, J = 6.6 Hz, 2 H), 6.89 (d, J = 8.7 Hz, 1 H), 6.94 (d, J = 8.4 Hz, 1 H), 7.16-7.24 (m, 2 H), 7.34 (t, J = 8.1 Hz, 1 H), 7.38-7.43 (m, 3 H), 7.51-7.54 (m, 2 H), 7.58 (d, J = 7.8 Hz, 1 H), 7.65 (s, 1 H), 8.27 (t, 1 H), 8.59 (d, J = 1.8 Hz, 1 H), 8.92 (s, 1 H), 9.34 (s, 1 H). ¹³C NMR (100.4 MHz, CDCl3): δ = 14.1, 22.6, 22.7, 25.9, 26.0, 26.0, 29.0, 29.2, 29.2, 29.3, 29.3, 29.4, 31.7, 31.8, 68.6, 69.3, 85.4, 86.5, 94.1, 95.9, 112.1, 113.3, 115.0, 116.3, 117.4, 119.8, 123.0, 125.1, 125.2, 126.0, 126.7, 128.2, 129.0, 130.4, 130.7, 131.4, 131.7, 132.3, 135.2, 137.0, 141.3, 152.8, 153.7, 154.9, 159.1, 159.1. MS (MADI-TOF): m/z = 663.8 [M + H]+. HRMS (MALDI-TOF): m/z calcd for C46H51N2O2 [M + H]+: 663.3945; found: 663.3945.
Compound 4: Pale yellow solid; mp >320 ˚C. IR (KBr): 2921, 2852, 2204, 1621, 1600, 1589, 1560, 1510, 1472, 1270, 1249, 826, 815, 758, 742 cm. MS (MALDI): m/z = 889.1 [M + H]+. HRMS (MALDI-TOF): m/z calcd for C63H58N3O2: 888.4524; found: 888.4528. Anal. Calcd for C63H59N3O3˙H2O: C, 83.50; H, 6.56; N, 4.64. Found: C, 83.28; H, 6.56; N, 4.42. Compound 44: Pale yellow solid; mp 237-239 ˚C. ¹H NMR (300 MHz, CDCl3): δ = 0.88 (t, J = 6.6 Hz, 3 H), 1.25-1.46 (m, 10 H), 1.79 (t, J = 6.9 Hz, 2 H), 4.02 (t, J = 6.6 Hz, 2 H), 4.36 (d, J = 2.4 Hz, 2 H), 4.87 (br, 1 H), 6.70-6.78 (q, 2 H), 6.86 (d, J = 8.7 Hz, 1 H), 7.22-7.28 (m, 2 H), 7.31-7.34 (m, 2 H), 7.36-7.38 (d, J = 7.2 Hz, 1 H), 7.42-7.50 (q, 3 H), 7.56 (d, J = 6.6 Hz, 1 H), 7.65 (d, J = 7.5 Hz, 1 H), 7.71 (s, 1 H), 7.94 (s, 1 H), 8.41 (s, 1 H). ¹³C NMR (75.3 MHz, CDCl3):
δ = 14.1, 22. 7, 26.1, 29.1, 29.3, 29.3, 31.8, 48.2, 68.797, 85.2, 87.0, 93. 7, 95.8, 108.5, 109.9, 111.7, 115.5, 117.0, 121.4, 123.9, 125.2, 126.5, 127.4, 127.6, 128.51, 128.7, 129.3, 129.5, 129.7, 131.0, 132.2, 139.0, 140.2, 149.0, 149.9, 166.7. ESI-MS: m/z 553.2 [M + H]+, 575.1 [M + Na]+. MS (MALDI-TOF): m/z 553.0 [M + H]+. HRMS (MALDI-TOF): m/z calcd for C38H37N2O2 [M + H]+: 553.2850; found: 553.2863.
Compound 45: White solid; mp 226-227 ˚C. ¹H NMR (300 MHz, CDCl3): δ = 0.89 (t, J = 6.9 Hz, 6 H), 1.26-1.53 (m, 20 H), 1.78-1.89 (m, 4 H), 4.03 (tt, 4 H), 4.44 (d, J = 5.4 Hz, 2 H), 4.61 (t, J = 4.5 Hz, 1 H), 4.64 (d, 2 H), 4.98 (t, J = 4.8 Hz, 1 H), 6.72 (t, 2 H), 6.84 (s, 1 H), 6.87 (s, 1 H), 6.91 (dd, J 1 = 8.1 Hz, J 2 = 1.8 Hz, 1 H), 7.17 (d, J = 1.5 Hz, 1 H), 7.21-7.31 (dd, 2 H), 7.34-7.41 (m, 2 H), 7.42-7.28 (t, 2 H), 7.54 (d, J = 6.9 Hz, 1 H), 7.82 (s, 1 H). ¹³C NMR (100.4 MHz, CDCl3): δ = 14.1, 22.7, 26.1, 29.2, 29.2, 29.2, 29.3, 29.3, 29.4, 29.7, 31.8, 31.8, 41.1, 46.2, 68.3, 68.5, 83.8, 85.9, 94.7, 96.6, 109.3, 110.3, 110.6, 111.0, 114.3, 115.1, 115.5, 117.1, 120.5, 122.9, 126.4, 127.0, 127.9, 128.4, 129.3, 129.5, 131.3, 131.5, 131.7, 138.2, 140.6, 147.0, 149.1, 156.4. MS (MALDI-TOF): m/z = 667.8 [M + H]+. HRMS (MALDI-TOF): m/z calcd for C46H55N2O2 [M + H]+: 667.4258; found: 667.4273.