218606-97-4Relevant academic research and scientific papers
An efficient synthesis of 3,4-dihydropyran-2-one derivatives by Lewis base-catalyzed tandem Michael addition and lactonization
Tozawa, Takashi,Fujisawa, Hidehiko,Mukaiyama, Teruaki
, p. 1454 - 1455 (2004)
A convenient one-pot preparation of 3,4-dihydropyran-2-one derivatives by Michael addition of silyl enolate derived from phenyl ester with α,β-unsaturated ketones in the presence of a Lewis base catalyst such as tetrabutylammonium phenoxide was developed. In this catalytic cycle, 3,4-dihydropyran-2-ones were produced in good to excellent yields via intramolecular cyclization of in situ formed Michael-adducts.
Facile synthesis of 3,4-dihydro-α-pyrones via Michael reaction-O-acylation sequences
Kobayashi, Shu,Moriwaki, Mitsuhiro
, p. 551 - 552 (2007/10/03)
3,4-Dihydro-α-pyrones were prepared in excellent yields with high stereoselectivities by the trityl salt-catalyzed Michael reaction and sequential intramolecular O-acylation of the intermediary silyl enol ethers using a mercury (II) salt (one-pot reaction
