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Volumn 10, Issue 13, 2008, Pages 2781-2783

Asymmetric synthesis of terminal N-tert-butylsulfinyl aziridines from organoceriums and an α-chloroimine

Author keywords

[No Author keywords available]

Indexed keywords

ALPHA CHLOROIMINE; ALPHA-CHLOROIMINE; AZIRIDINE DERIVATIVE; CERIUM; CHLORINATED HYDROCARBON; IMINE; ORGANIC COMPOUND; SULFUR DERIVATIVE;

EID: 51649107330     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol800961a     Document Type: Article
Times cited : (37)

References (37)
  • 1
    • 1542375289 scopus 로고    scopus 로고
    • (a) Hu, X. E. Tetrahedron 2004, 60, 2701-2743.
    • (2004) Tetrahedron , vol.60 , pp. 2701-2743
    • Hu, X.E.1
  • 3
    • 84906433763 scopus 로고    scopus 로고
    • Padwa, A. In Comprehensive Heterocyclic Chemistry III; Katritzky, A. R., Ramsden, C. A., Scriven, E. F. V., Taylor, R. J. K., Eds.; Elsevier: Oxford, 2008, 1, pp 1-104.
    • (c) Padwa, A. In Comprehensive Heterocyclic Chemistry III; Katritzky, A. R., Ramsden, C. A., Scriven, E. F. V., Taylor, R. J. K., Eds.; Elsevier: Oxford, 2008, Vol. 1, pp 1-104.
  • 12
    • 33747113614 scopus 로고    scopus 로고
    • For a recent review on chiral nonracemic sulfinimines, see
    • (b) For a recent review on chiral nonracemic sulfinimines, see: Morton, D.; Stockman, R. A. Tetrahedron 2006, 62, 8869-8905.
    • (2006) Tetrahedron , vol.62 , pp. 8869-8905
    • Morton, D.1    Stockman, R.A.2
  • 13
    • 4544268904 scopus 로고    scopus 로고
    • For efficient resolution-based approaches to terminal aziridines from epoxides, see: a
    • For efficient resolution-based approaches to terminal aziridines from epoxides, see: (a) Kim, S. K.; Jacobsen, E. N. Angew. Chem., Int. Ed. 2004, 43, 3952-3954.
    • (2004) Angew. Chem., Int. Ed , vol.43 , pp. 3952-3954
    • Kim, S.K.1    Jacobsen, E.N.2
  • 17
    • 67650015795 scopus 로고    scopus 로고
    • Prepared in one-step from commercially available 4-chloro-1,3-dioxolan-2- one, see:Gross, H.; Costisella, B. Org. Prep. Proced. Int. 1969, 1, 97-98.
    • Prepared in one-step from commercially available 4-chloro-1,3-dioxolan-2- one, see:Gross, H.; Costisella, B. Org. Prep. Proced. Int. 1969, 1, 97-98.
  • 20
    • 33846463792 scopus 로고    scopus 로고
    • During the course of our work, an isolated example of addition of a Grignard reagent to imine 5 (mesitylMgBr, toluene, -78°C) was reported to give a single diastereomer of the corresponding chlorosulfinamide; this might be attributable to steric effects with this particular reagent, see: Crimmins, M. T.; Shamszad, M. Org. Lett. 2007, 9, 149-152.
    • During the course of our work, an isolated example of addition of a Grignard reagent to imine 5 (mesitylMgBr, toluene, -78°C) was reported to give a single diastereomer of the corresponding chlorosulfinamide; this might be attributable to steric effects with this particular reagent, see: Crimmins, M. T.; Shamszad, M. Org. Lett. 2007, 9, 149-152.
  • 22
    • 0033605830 scopus 로고    scopus 로고
    • For a review on organocerium reagents, see
    • (b) For a review on organocerium reagents, see: Liu, H.-J.; Shia, K.-S.; Shang, X.; Zhu, B.-Y. Tetrahedron 1999, 55, 3803-3830.
    • (1999) Tetrahedron , vol.55 , pp. 3803-3830
    • Liu, H.-J.1    Shia, K.-S.2    Shang, X.3    Zhu, B.-Y.4
  • 24
    • 59949091439 scopus 로고    scopus 로고
    • General Procedure. The organolithium (1.2 mmol) in THF (5 mL) was added dropwise to a stirred slurry of CeCl3 (295 mg, 1.2 mmol) in THF (7 mL) at -78°C under argon. After 45 min DMPU (1.5 mL) was added, followed after 15 min by a solution of imine 5 (181 mg, 1 mmol) in THF (3 mL) and the reaction mixture was then allowed to warm to room temperature overnight. Saturated aq NH4Cl (10 mL) and Et2O (5 mL) were added, the reaction mixture filtered through a pad of Celite, and the filter cake washed thoroughly with Et2O (3 x 10 mL, The combined organic layers were washed with H2O (2 x 15 mL) and brine (15 mL, dried (MgSO 4) and evaporated under reduced pressure. Purification of the residue by column chromatography (SiO2, petroleum ether/Et2O) gave the corresponding aziridine 7
    • 2O) gave the corresponding aziridine 7.
  • 25
    • 59949093978 scopus 로고    scopus 로고
    • 9 to 96:4 (75% yield).
    • 9 to 96:4 (75% yield).
  • 26
    • 59949100665 scopus 로고    scopus 로고
    • For details, see Supporting Information
    • For details, see Supporting Information.
  • 34
    • 59949088853 scopus 로고    scopus 로고
    • The principal authors of refs 17a,c and d have accepted that their published data for material obtained on deprotection are not consistent with that expected for the deprotected aziridines (personal communications with Profs. Stockman, De Kimpe, and Aggarwal).
    • The principal authors of refs 17a,c and d have accepted that their published data for material obtained on deprotection are not consistent with that expected for the deprotected aziridines (personal communications with Profs. Stockman, De Kimpe, and Aggarwal).


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