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Volumn 12, Issue 8, 2010, Pages 1373-1375

Catalytic ring-opening allylation of cyclic acetals with allylsilanes using silica-alumina

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EID: 77955208135     PISSN: 14639262     EISSN: 14639270     Source Type: Journal    
DOI: 10.1039/c005033d     Document Type: Article
Times cited : (7)

References (26)
  • 19
    • 85032766158 scopus 로고    scopus 로고
    • The reaction scarcely proceeded with 1-hexene instead of allyltrimethylsilane under the same reaction conditions as in Table 1, entry 1 except for the alkene substrate
    • The reaction scarcely proceeded with 1-hexene instead of allyltrimethylsilane under the same reaction conditions as in Table 1, entry 1 except for the alkene substrate.
  • 21
    • 0142245586 scopus 로고    scopus 로고
    • 2 (Table 1, entry 17), mesoporous silica FSM-16 showed 18% yield of the product (entry 11). Effects of mesoporous structure on acid-catalyzed reactions have been reported in the following literature
    • 2 (Table 1, entry 17), mesoporous silica FSM-16 showed 18% yield of the product (entry 11). Effects of mesoporous structure on acid-catalyzed reactions have been reported in the following literature: M. Iwamoto Y. Tanaka N. Sawamura S. Namba J. Am. Chem. Soc. 2003 125 13032.
    • (2003) J. Am. Chem. Soc. , vol.125 , pp. 13032
    • Iwamoto, M.1    Tanaka, Y.2    Sawamura, N.3    Namba, S.4
  • 26
    • 85032772844 scopus 로고    scopus 로고
    • After the hydrolysis reaction, reuse of the silica-alumina catalyst was examined. The used silica-alumina was separated from the reaction mixture, then calcined at 500 °C. The catalytic activity of the used catalyst for ring-opening allylation decreased compared with fresh silica-alumina (yield of 3: 83% for 8 h (fresh), 52% for 8 h (reused)). However, after the prolonged reaction time, a satisfactory yield of 3 was obtained (73% for 20 h). Hydrolysis of 3 also proceeded with the used catalyst to afford 5 in 70% yield based on 1
    • After the hydrolysis reaction, reuse of the silica-alumina catalyst was examined. The used silica-alumina was separated from the reaction mixture, then calcined at 500 °C. The catalytic activity of the used catalyst for ring-opening allylation decreased compared with fresh silica-alumina (yield of 3: 83% for 8 h (fresh), 52% for 8 h (reused)). However, after the prolonged reaction time, a satisfactory yield of 3 was obtained (73% for 20 h). Hydrolysis of 3 also proceeded with the used catalyst to afford 5 in 70% yield based on 1.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.