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Volumn , Issue 8, 2008, Pages 1175-1178

Dess-Martin periodinane promoted oxidative coupling of Baylis-Hillman adducts with silyl enol ethers: A novel synthesis of cis-fused dihydropyrans

Author keywords

Baylis Hillman adducts; Enol ethers; Hypervalent iodine; Oxidative Mukaiyama Michael addition

Indexed keywords

PYRAN DERIVATIVE; SILANE DERIVATIVE;

EID: 44349130265     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2008-1072730     Document Type: Article
Times cited : (10)

References (35)
  • 34
    • 44349145778 scopus 로고    scopus 로고
    • General Experimental Procedure A mixture of Baylis-Hillman adduct (1 mmol, DMP (1.2 mmol, and pyridine (1.5 mmol) in anhyd CH2Cl 2 (10 mL) was stirred at r.t. until complete oxidation took place. To this, trimethylsilyl enol ether (1.5 mmol) was added and stirred until complete addition (as indicated by TLC) took place. The reaction mixture was diluted with H2O (50 mL) and extracted with Et2O (3 x 15 mL, The combined ether layer was washed with sat. aq NaHCO3 soln (1 x 15 mL, brine (1 x 10 mL, dried over Na2SO4, and evaporated. The crude product was purified by silica gel column chromatography using a gradient mixture of hexane-EtOAc (9:1) as eluent to afford pure substituted dihydropyran derivatives. Spectral Data of Selected Compounds Compound 3a (Table 1, colorless liquid. IR KBr, νmax, 2954, 2838, 1738, 1454, 1234, 1207, 1153, 1017, 781 cm-1. 1H NM
    • 4NaCl: 367.0713; found: 367.0715.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.