Trialkylsilyl Triflates-Practical Diastereoselective Catalysts in Conjugate Addition Reaction of Silyl Ketene Acetals and alfa, beta-Unsaturated Ketones

• Autorzy: Michalak, K. , Wicha, J.
• Języki publikacji: EN

Abstrakty

EN

Catalytic effect of trimethylsilyl triflate (TMSOTf) or tert-butyldimethylsilyl triflate (TBSOTf) in conjugate addition reaction of the respective trialkylsilyl derivatives of thioester enolates (silyl ketene acetals) 2a-2e and _,_-unsaturated ketones 1a-1c has been studied. It was shown that silyl triflates are efficient catalysts with stereochemical profile similar to that of trityl hexachloroantimonate. The use of silyl triflates is particularly advantageous in tandem reactions involving conjugate addition as the first step.

Słowa kluczowe

EN

enones; silyl enol ethers; Mukaiyama-Michael reaction; trialkylsilyl triflates

• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2004
• Tom: Vol. 78 / nr 2
• Strony: 205-215
• Opis fizyczny: Bibliogr. 57 poz., rys.

Twórcy

autor

Michalak, K.

• Institute of Organic Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44, 01-224 Warsaw, Poland Fax: [phone]

autor

Wicha, J.

• Institute of Organic Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44, 01-224 Warsaw, Poland Fax: [phone],

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