77070-73-6Relevant articles and documents
Reaction of Enamines with Acetals or Trialkyl Orthoformates Activated by Lewis Acids
Takazawa, Osamu,Kogami, Kunio,Hayashi, Kazuo
, p. 1876 - 1881 (2007/10/02)
Enamines, prepared readily from various carbonyl compounds, react with acetals or trialkyl orthoformates in the presence of Lewis acids such as BF3.OEt2 to give corresponding β-alkoxy carbonyl compounds or α-dialkoxymethyl carbonyl compounds in good yields.The reaction of dienamines with acetals or trialkyl orthoformates also selectively gives corresponding β,χ-unsaturated α-(α-alkoxyalkyl) carbonyl compounds or β,χ-unsatureted α-dialkoxymethyl carbonyl compounds in good yields.
NEW SYNTHESIS OF β-KETO ACETALS
Takazawa, Osamu,Mukaiyama, Teruaki
, p. 1307 - 1308 (2007/10/02)
Enamines derived from ketones or aldehydes react smoothly with trialkyl orthoformates in the presence of Lewis acids to give β-keto acetals in good yields.
Chemistry of enol ethers. LI. Reaction of vinyl silyl ethers with orthoformic esters
Makin, S. M.,Kruglikova, R. I.,Popova, T. P.,Tagirov, T. K.
, p. 630 - 634 (2007/10/02)
The silyl ethers of enolic forms of ketones react with orthoformates in the presence of zinc chloride at catalyst to form β-ketoacetals.The analogous reaction with the silyl ethers of enolic forms of aldehydes leads to the formation of the tetraacetals of 1,3-dialdehydes.
