메뉴 건너뛰기




Volumn 37, Issue 7, 2008, Pages 740-741

Manganese-catalyzed synthesis of hydantoin derivatives from terminal alkynes and isocyanates

Author keywords

[No Author keywords available]

Indexed keywords


EID: 49149100728     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2008.740     Document Type: Article
Times cited : (38)

References (29)
  • 7
    • 0001141297 scopus 로고
    • a) E. Ware, Chem. Rev. 1950, 46, 403.
    • (1950) Chem. Rev , vol.46 , pp. 403
    • Ware, E.1
  • 24
    • 49149118283 scopus 로고    scopus 로고
    • The structure of 3a was determined by a comparison with the reported data in ref 6a, and by X-ray single-crystal structure analysis.
    • The structure of 3a was determined by a comparison with the reported data in ref 6a, and by X-ray single-crystal structure analysis.
  • 25
    • 49149103488 scopus 로고    scopus 로고
    • Investigation of temperature in the reaction between phenyl-acetylene (1a) (1.0 equiv) and p-methoxyphenyl isocyanate (2b) (2.0 equiv): 5o°C, 0%; 80°C, 30%; 100°C, 45%; 115°C, 59%; 135°C, 62%; 15o°C, 75%.
    • Investigation of temperature in the reaction between phenyl-acetylene (1a) (1.0 equiv) and p-methoxyphenyl isocyanate (2b) (2.0 equiv): 5o°C, 0%; 80°C, 30%; 100°C, 45%; 115°C, 59%; 135°C, 62%; 15o°C, 75%.
  • 26
    • 49149103758 scopus 로고    scopus 로고
    • An iron complex, Fe(acac)3 (5.0mol, provided hydantoin derivative 3a in 8% yield. Only a trace amount of hydantoin 3a was obtained in the presence of a ruthenium complex, Ru3(CO) 12 or RuH2(CO)(PPh3)3. The reaction did not proceed using ReBr(CO)5, ReBr(CO)3thf, 2, FeCl3, and RhCl3
    • 3.
  • 27
    • 49149090525 scopus 로고    scopus 로고
    • In a reported paper (ref 6, the formation reaction of hydantoins proceeded stoichiometrically using an iron complex, Fe(CO)5. However, as a result of our investigation, the iron complex promoted the reaction catalytically
    • 5. However, as a result of our investigation, the iron complex promoted the reaction catalytically.
  • 28
    • 49149089792 scopus 로고    scopus 로고
    • Another reaction mechanism can be considered: (1) the formation of a manganese-alkylidene intermediate; (2) nucleophilic addition of isocyanate to the intermediate; (3) addition of another isocyanate; (4) addition of a manganese-carbon bond of the alkenylmanganese moiety; (5) isomerization of an olefinic moiety
    • Another reaction mechanism can be considered: (1) the formation of a manganese-alkylidene intermediate; (2) nucleophilic addition of isocyanate to the intermediate; (3) addition of another isocyanate; (4) addition of a manganese-carbon bond of the alkenylmanganese moiety; (5) isomerization of an olefinic moiety.
  • 29
    • 49149101674 scopus 로고    scopus 로고
    • Supporting Information is available electronically on the CSJ-Journal Web site, http://www.csj.jp/journals/chem-lett/index.html.
    • Supporting Information is available electronically on the CSJ-Journal Web site, http://www.csj.jp/journals/chem-lett/index.html.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.