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DOI: 10.1055/s-2004-820045
Cyanosilylation of Ketones Catalyzed by Quaternary Ammonium Salt and N-Oxide
Publication History
Publication Date:
25 March 2004 (online)

Abstract
Dibenzyldimethyl ammonium bromide and triethanolamine N-oxide catalyze the formation of cyanohydrin trimethylsilyl ethers of ketones in 80-99% yield.
Key words
cyanohydrins - ketones - N-oxides - quaternary ammonium salts - organocatalysis
- 1a
Gregory RJH. Chem. Rev. 1999, 99: 3649 - 1b
North M. Tetrahedron: Asymmetry 2003, 14: 147 - 2
Groutas WC.Felker D. Synthesis 1980, 861 - 3a
Chen F.-X.Feng X.-M.Qin B.Zhang G.-L.Jiang Y.-Z. Synlett 2003, 558 - 3b
Shen Y.-C.Feng X.-M.Li Y.Zhang G.-L.Jiang Y.-Z. Synlett 2002, 793 - 3c
Shen Y.-C.Feng X.-M.Li Y.Zhang G.-L.Jiang Y.-Z. Tetrahedron 2003, 59: 5667 - 3d
Bian Z.-X.Zhao H.-Y.Li B.-G. Polyhedron 2003, 22: 1523 - 3e
Yadav JS.Reddy BVS.Reddy MS.Prasad AR. Tetrahedron Lett. 2002, 42: 9703 - 3f
Singh VK.Saravanan P.Vijaya Anand R. Tetrahedron Lett. 1998, 39: 3823 - 3g
Wilkinson HS.Grover PT.Vandenbossche CP.Bakale RP.Bhongle NN.Wald SA.Senanayake CH. Org. Lett. 2001, 3: 553 - 3h
Bandini M.Cozzi PG.Melchiorre P.Umani-Ronchi A. Tetrahedron Lett. 2001, 42: 3041 ; and references cited therein - 4a
Hamashima Y.Sawada D.Kanai M.Shibasaki M. J. Am. Chem. Soc. 1999, 121: 2641 - 4b
Hamsahima Y.Kanai M.Shibasaki M. J. Am. Chem. Soc. 2000, 122: 7412 - 4c
Yabu K.Masumoto S.Yamasaki S.Hamashima Y.Kanai M.Du W.Curran DP.Shibasaki M. J. Am. Chem. Soc. 2001, 123: 9908 - 4d
Hamashima Y.Kanai M.Shibasaki M. Tetrahedron Lett. 2001, 42: 691 - 4e
Yabu K.Masumoto S.Kanai M.Curran DP.Shibasaki M. Tetrahedron Lett. 2002, 43: 2923 - 4f
Deng H.Isler MP.Snapper ML.Hoveyda AH. Angew. Chem. Int. Ed. 2002, 41: 1009 - 4g
Casas J.Nájera C.Sansano JM.Saá JM. Org. Lett. 2002, 4: 2589 - 4h
Chen F.-X.Feng X.-M.Qin B.Zhang G.-L.Jiang Y.-Z. Org. Lett. 2003, 5: 949 - 4i
Shen Y.-C.Feng X.-M.Zhang G.-L.Jiang Y.-Z. Synlett 2002, 1353 - 4j
Shen Y.-C.Feng X.-M.Li Y.Zhang G.-L.Jiang Y.-Z. Eur. J. Org. Chem. 2004, 129 ; and references cited therein - 5
Fubini B.Aréan CO. Chem. Soc. Rev. 1999, 28: 373 - 6a
Dalko PI.Moisan L. Angew. Chem. Int. Ed. 2001, 40: 3726 - 6b
Schreiner PR. Chem. Soc. Rev. 2003, 32: 289 - Recent studies in organocatalysis:
- 7a
Pidathala C.Hoang L.Vignola N.List B. Angew. Chem. Int. Ed. 2003, 42: 2785 - 7b
Juhl K.Jørgensen KA. Angew. Chem. Int. Ed. 2003, 42: 1498 - 7c
Hayashi Y.Tsuboi W.Ashimine I.Urushima T.Shoji M.Sakai K. Angew. Chem. Int. Ed. 2003, 42: 3677 - 7d
Halland N.Aburel PS.Jørgensen KA. Angew. Chem. Int. Ed. 2003, 42: 661 - 7e
Hoang L.Bahmanyar S.Houk KN.List B. J. Am. Chem. Soc. 2003, 125: 16 - 7f
Bahmanyar S.Houk KN.Martin HJ.List B. J. Am. Chem. Soc. 2003, 125: 2475 - 7g
Melchiorre P.Jørgensen KA. J. Org. Chem. 2003, 68: 4151 - 7h
Chowdari NS.Ramachary DB.Barbas CF. Org. Lett. 2003, 5: 1685 - 7i
Bahmanyar S.Houk KN. Org. Lett. 2003, 5: 1249 - 7j
Córdova A.Barbas CF. Tetrahedron Lett. 2003, 44: 1923 - 7k
Liu H.Peng L.Zhang T.Li Y. New J. Chem. 2003, 27: 1159 - 7l
Zhong G. Angew. Chem. Int. Ed. 2003, 42: 4247 - 7m
Ramachary DB.Chowdari NS.Barbas CF. Angew. Chem. Int. Ed. 2003, 42: 4233 - 7n
Hayashi Y.Tsuboi W.Shoji M.Suzuki N. J. Am. Chem. Soc. 2003, 125: 11208 - 8a
Tian S.-K.Deng L. J. Am. Chem. Soc. 2001, 123: 6195 - 8b
Tian S.-K.Hong R.Deng L. J. Am. Chem. Soc. 2003, 125: 9900
References
Typical Procedure: To a mixture of ketone (1.1 mmol), dibenzyldimethyl ammonium bromide (0.027 mmol) and triethanolamine N-oxide (0.027 mmol) in CH2Cl2 (0.5 mL) was added trimethylsilyl cyanide (2.2 mmol, 2 equiv.) at r.t. The reaction was monitored by TLC, and after the reaction period described in Table [4] , the reaction mixture was concentrated under reduced pressure and purified by silica gel column to give the pure product with Et2O-petroleum ether (1:100) as the eluent.