65755-82-0Relevant articles and documents
Synthesis of alkynyl ethers and low-temperature sigmatropic rearrangement of allyl and benzyl alkynyl ethers
Sosa, Juan R.,Tudjarian, Armen A.,Minehan, Thomas G.
supporting information; scheme or table, p. 5091 - 5094 (2009/05/31)
(Chemical Equation Presented) α-Alkoxy ketones 3 can be transformed into 1-alkynyl ethers 5 by a two-step procedure involving formation of the enol triflate or phosphate and base-induced elimination. Performing the same reaction sequence with allylic alcohols (R2OH, R2 = allyl) furnishes instead γ,δ-unsaturated carboxylic acid derivatives 6, derived from [3,3]-sigmatropic rearrangement of the intermediate allyl alkynyl ethers at -78 °C and trapping of the subsequently formed ketene with nucleophiles (Nu-H). Benzyl alkynyl ether 5 (R2 = benzyl) rearranges to indanone 7 upon heating to 60 °C.
Regiospecific Synthesis of β, γ-Unsaturated Ketones from Allylic Alcohols. Claisen Rearrangement of α-Allyloxy Ketone Enol Derivatives
Kachinsky, Joseph L. C.,Salomon, Robert G.
, p. 1393 - 1401 (2007/10/02)
β,γ-Unsaturated ketones are prepared with regiospecific C-C bond formation at the former γ-position of primary, secondary, or tertiary allylic alcohol precursors by a process involving sigmatropic Claisen rearrangement of intermediate α-allyloxy ket
