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Volumn 51, Issue 51, 2010, Pages 6763-6766

Construction of 3-aryl-1,2,4-benzotriazines via unprecedented rearrangement of bis(benzotriazol-1-yl)methylarenes

Author keywords

[No Author keywords available]

Indexed keywords

1,1 BIS(BENZOTRIAZOL 1 YL)METHYLARENE DERIVATIVE; 3 4 TOLYL 1,2,4 BENZOTRIAZINE; 3 PHENYL 1,2,4 BENZOTRIAZINE; ALDEHYDE; BROMIDE; POLYCYCLIC AROMATIC HYDROCARBON; SAMARIUM; TRIAZINE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 78649316981     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2010.10.093     Document Type: Article
Times cited : (19)

References (35)
  • 21
    • 78649326892 scopus 로고    scopus 로고
    • note
    • General procedure: To a solution of aromatic aldehyde (10 mmol) and benzotriazole (20 mmol) in toluene (50 mL) was added PTSA (20 mol %). The mixture was then refluxed for 36 h (monitored by TLC). The resulting brown reaction mixture was cooled to room temperature and extracted with ethyl acetate (3 × 20 mL). The combined extracts were washed successively with saturated sodium bicarbonate and brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was subjected to purification on silica gel chromatography (PE:EA = 4:1) to give 1,l-bis(benzotriazol-yl) alkanes (1a-j) and 1-(benzotriazol-1-yl)-l-(benzotriazol-2-yl)methylarenes (2a-j).
  • 28
    • 78649331635 scopus 로고    scopus 로고
    • note
    • 4. The solvent was removed by evaporation under reduced pressure. The crude product was purified by column chromatography on silica gel (PE:EA = 6:1) to afford 3-aryl-1,2,4-benzotriazines 3a (82.8 mg, 40% yield) as yellow solid and benzyl benzotriazoles 4a (102.4 mg, 49% yield) as light brown solid.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.