Synthesis of β-substituted chalcones from phenones via conjugated nucleophilic substitution of propargylic alcohols
Phenones can be efficiently transformed into β-substituted chalcones in a two-step process. First, propargylic alcohols were obtained by addition of ethoxyacetylene anion to aromatic ketones. Activation of the propargylic alcohols using a catalytic amount
Halima, Taoufik Ben,Chapdelaine, Daniel
supporting information; experimental part
p. 1675 - 1677
(2012/08/07)
Alkoxyacetylenes from alkyl 1,2-dichlorovinyl ethers
Alkyl 1,2-dichlorovinyl ethers 4, prepared from sodium alkoxides 1 and trichloroethylene 2, react in tetrahydrofuran with two equivalents of butyllithium to afford lithium alkoxyacetylides 5. On the one hand, these acetylides react with ketones or dichlor
Loffler,Himbert
p. 495 - 498
(2007/10/02)
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