| تعداد نشریات | 48 |
| تعداد شمارهها | 1,242 |
| تعداد مقالات | 10,688 |
| تعداد مشاهده مقاله | 21,873,979 |
| تعداد دریافت فایل اصل مقاله | 14,703,046 |
Three-component procedure for the synthesis of new chiral spirooxindolopyrrolizidines via catalytic highly enantioselective 1,3-dipolar cycloaddition | ||
| Iranian chemical communication | ||
| مقاله 4، دوره 3، Issue 2, pp. 72-147, Serial No. 7، تیر 2015، صفحه 96-104 اصل مقاله (833.35 K) | ||
| نوع مقاله: Original Research Article | ||
| نویسندگان | ||
| Mohammad Javad Taghizadeh* 1؛ Khosrow Jadidi2 | ||
| 1Department of Chemistry, School of Sciences University of Imam Hossein, Tehran, Iran | ||
| 2Department of Chemistry, Shahid Beheshti University, G.C. Tehran 1983963113, Iran | ||
| چکیده | ||
| The catalytic highly regio-, diastereo-, and enantioselective synthesis of a small library of spiropyrrolizidineoxindolesvia a four-component 1,3-dipolar cycloaddition reaction of azomethine ylides, derived from isatin, with electron-deficient dipolarophilewas described. The process occurs at room temperature in aqueous ethanol as a green solvent and in the presence of a bidendatebis(imine)–Cu(II)triflate complex as catalyst.The reaction mechanism is discussedon the basis of the assignment of the absolute configuration of the cycloadducts. The catalytic highly regio-, diastereo-, and enantioselective synthesis of a small library of spiropyrrolizidineoxindolesvia a four-component 1,3-dipolar cycloaddition reaction of azomethine ylides, derived from isatin, with electron-deficient dipolarophilewas described. The process occurs at room temperature in aqueous ethanol as a green solvent and in the presence of a bidendatebis(imine)–Cu(II)triflate complex as catalyst.The reaction mechanism is discussedon the basis of the assignment of the absolute configuration of the cycloadducts. | ||
| کلیدواژهها | ||
| Chiral auxiliaries؛ chiral spiro-oxindolopyrrolizidines؛ asymmetric 1-3-dipolar؛ azomethineylide | ||
| مراجع | ||
|
[1] D.J. Ram, M.Yus, Angew. Chem. Int. Ed., 2005, 44, 1602-1634.
[2] A. Jossang, P. Jossang, H. A. Hadi, T. Sevenet, J. Org. Chem., 1991, 56, 6527-6530.
[3] M.N.G. James, G.J.B. Williams, Can. J. Chem., 1972, 50, 2407-2412.
[4] E. Roeder, H. Wiedenfeld, Pharmazie., 2011, 66, 637-647.
[5] S. Shangary et al, Proc. Natl. Acad. Sci. U.S.A., 2008, 105, 3933-3938.
[6] M.J. Taghizadeh,H. Arvinnezhad, S. Samadi, K. Jadidi, A. Javidan, B. Notash, Tetrahedron Letters, 2012, 53, 5148-5150.
[7] M. Moemeni, H. Arvinnezhad, S. Samadi, M. Tajbakhsh, K. Jadidi, H.R. Khavasi, J. Heterocycl. Chem., 2012, 49, 190-194.
[8] S. Cabrera, R.G. Arrayás, J.C. Carretero, J. Am. Chem. Soc., 2005, 127, 16394-16395.
[9] T. Saito, T. Yamada, S. Miyazaki, T. Otani, Tetrahedron Lett., 2004, 45, 9585–9587.
[10] R. Breinbauer, E.N. Jacobsen, Angew. Chem. Int. Ed., 2000, 39, 3604-3607.
[11] K.V. Gothelf, K.A. Jorgensen, Chem. Rev., 1998, 98, 863-909.
[12] D.A. Evans, T. Lectkata, S. Miller, Termhedmn Leuers., 1993, 34, 7027-7030. | ||
|
آمار تعداد مشاهده مقاله: 2,486 تعداد دریافت فایل اصل مقاله: 2,381 |
||