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Volumn 49, Issue 16, 2008, Pages 2519-2522

Synthesis of pyrazine acetals by the biased reaction of symmetric 2,5-bis(chloromethyl) or 2,3,5,6-tetrakis(chloromethyl) substituents on pyrazine ring with sodium alkoxides

Author keywords

1,6 Elimination; Biased reaction; Pd(II) complex; Pyrazine; Quinodimethane

Indexed keywords

2,3,5,6 TETRAKIS(CHLOROMETHYL)PYRAZINE; 2,5 BIS(ALKOYXMETHYL)PYRAZINE; 2,6 BIS(DIALKOXYMETHYL) 3,5 DIMETHYLPYRAZINE; ACETAL DERIVATIVE; FUNCTIONAL GROUP; PYRAZINE DERIVATIVE; SODIUM DERIVATIVE; SOLVENT; UNCLASSIFIED DRUG;

EID: 40849111241     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2008.02.119     Document Type: Article
Times cited : (4)

References (29)
  • 20
    • 40849147776 scopus 로고    scopus 로고
    • note
    • General procedure: A solution of 1 (100 mg, 0.56 mmol) in absolute methanol (9 ml) was slowly added under nitrogen to a solution of sodium methoxide (6.7 mmol: 155 mg for sodium) in absolute methanol (15 ml) and then the mixture was refluxed for 24 h. After the removal of sodium salts, the residue was chromatographed on silica gel, eluting with ethyl acetate/cyclohexane (3:2 v/v), to afford 2a (10.3 mg, 11%) and 3a (59.3 mg, 63%).
  • 22
    • 40849103201 scopus 로고    scopus 로고
    • note
    • 1H NMR peaks due to a pair of alkoxymethyl groups (e.g., δ 3.50, and 4.63 ppm for 3a) and a singlet peak due to two equivalent pyrazine protons (δ 8.64 ppm for 3a) appeared.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.