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Volumn , Issue 20, 2007, Pages 3127-3130

A convenient one-pot synthesis of 2,2-dialkyl-2,3-dihydro-1H-naphtho[2,1-b] pyrans

Author keywords

Alkylation; Aromatization; Cyclizations; Fused ring systems; Naphthopyran; Rearrangements

Indexed keywords

2,2 DIALKYL 2,3 DIHYDRO 1H NAPHTHO[2,1 B]PYRAN DERIVATIVE; 2,3 DIHYDRO 2,2 DIMETHYL 1H BENZO CHROMENE; CHROMENE DERIVATIVE; PROPIONALDEHYDE; PYRAN DERIVATIVE; TETRALIN DERIVATIVE; UNCLASSIFIED DRUG;

EID: 37748998554     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-992380     Document Type: Article
Times cited : (11)

References (44)
  • 12
  • 40
    • 37749054686 scopus 로고    scopus 로고
    • In a typical procedure, a mixture of an appropriate β- hydroxypropionaldehyde (0.01 mol) and a 2-tetralone analogue (0.0105 mol) were stirred in AcOH (ca. 50 mL) at 0°C Freshly prepared dry HCl gas was briskly passed through the mixture for 1 h. Stirring was continued at r.t. for 17 h. Then, AcOH was removed under vacuum and the residue was extracted with CH 2Cl2 (2 x 100 mL) and H2O (2 x 50 mL, The organic layer was dried and rotary evaporated to dryness to yield crude product, which was purified by column chromatography (silica gel mesh size 230-240; eluent 1-2% EtOAc-hexane, Spectroscopic Data for a Representative Compound Compound 4o: 1H NMR (300 MHz, CDCl3, δ, 1.53 (3 H, s, CH3, 3.10 and 3.46 (1 H each, d, J, 16.2 Hz, ArCHa and ArCHb, 3.97 (3 H, s, OCH3, 4.19 and 4.33 1 H each, d, J, 10.5 Hz, OCHa and OCH b
    • -1.
  • 42
    • 37749028180 scopus 로고    scopus 로고
    • Carey, F. A.In Organic Chemistry, 6th ed.; McGraw Hill: New York, 2006, 362.
    • (a) Carey, F. A.In Organic Chemistry, 6th ed.; McGraw Hill: New York, 2006, 362.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.