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Volumn , Issue 9, 2008, Pages 1366-1370

Intramolecular cycloisomerization of aryl-substituted alkylidenecyclopropanes via NHC palladium-catalyzed cascade C-C bond cleavage/C-H activation/C-C bond formation

Author keywords

Alkylidenecyclopropanes; Cycloisomerization; Dihydronaphthalenes; N heterocyclic carbene; Ring opening

Indexed keywords

ALKENE; CARBENE; CYCLOPROPANE DERIVATIVE; NAPHTHALENE DERIVATIVE; PALLADIUM;

EID: 45749111096     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2008-1078404     Document Type: Article
Times cited : (14)

References (61)
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    • Preparation of 4-Phenyl-1,2-dihydronaphthalene (2a) and (1-Phenylbuta-1,3-dienyl)benzene (3a, Typical Procedure Under an N 2 atmosphere, a mixture of 1a (206 mg, 1 mmol, Cl 2PdL2 (20 mg, 0.02 mmol, IMeṡHCl (35 mg, 0.08 mmol) and DMA (2 mL) was stirred for 12 h at 160°C. The reaction was monitored by TLC (eluent: hexane, After the reaction was judged complete, the reaction mixture was allowed to cool. The crude mixture was then loaded directly onto SiO2 and purified by column chromatography using hexane as the eluent to give the products 2a (86 mg, 42, and 3a (14 mg, 7, Compound 2a: colorless oil. IR (film, νmax, 3059, 3026, 2934, 1720, 1662, 1597, 1489, 1447, 1269, 1157 cm-1. 1H NMR (400 MHz, CDCl3, δ, 7.49-7.09 (m, 5 H, 7.00 (d, J, 7.4 Hz, 1 H, 6.08 (t, J, 4.7 Hz, 1 H, 2.84 (t, J, 8.1 Hz, 2 H, 2.42-2.37 m
    • 3): δ = 143.1, 142.1, 139.6, 134.9, 130.4, 128.5, 128.2. 128.1, 127.6, 127.5, 127.4, 118.6.
  • 40
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    • The crystal data of 2f have been deposited at the CCDC with number 671565. Crystal data for 2f: C22H26O2, MW, 322.43, monoclinic, space group P2(1)/c, final R indices [I > 2σ(I, R1, 0.0505, wR2, 0.1033, a, 14.8134(19) Å, b, 16.2215(19) Å, c, 7.7787(10) Å, α, 90°, β, 100.708(2)°, γ, 90°, V, 1836.6(4) Å3, crystal size: 0.482 x 0.435 x 0.276 mm, T, 293 (2) K, Z, 4, reflections collected/unique: 10650/ 3977 Rint, 0.0921, data: 3977, restraints: 0, parameters: 222
    • int = 0.0921), data: 3977, restraints: 0, parameters: 222.
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    • For reviews on C-H activation, see: a
    • For reviews on C-H activation, see: (a) Kakiuchi, F.; Murai, S. Acc. Chem. Res. 2002, 35, 826.
    • (2002) Acc. Chem. Res , vol.35 , pp. 826
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  • 52
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    • For related intramolecular alkyl-aryl coupling reactions, see: a
    • For related intramolecular alkyl-aryl coupling reactions, see: (a) Baudoin, O.; Herrbach, A.; Guéritte, F. Angew. Chem. Int. Ed. 2003, 42, 5736.
    • (2003) Angew. Chem. Int. Ed , vol.42 , pp. 5736
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.