25328-81-8Relevant articles and documents
New insights into the alkoxycarbonylation of propargyl alcohol
Scrivanti,Beghetto,Bertoldini
, p. 38 - 42 (2017/11/15)
The challenging carbonylation of propargyl alcohol is effectively catalyzed by Pd(OAc)2 in combination with diphenyl-(6-methyl-pyridin-2-yl)phosphine and methanesulfonic acid. In dichloroethane at 20–50 °C, the reaction affords with almost complete regioselectivity alkyl 2-(hydroxymethyl)acrylates. Turnover frequency numbers (TOF) of up to 450 h?1 can be achieved working at 50 °C, while a maximum turnover number (TON) of about 730 is obtained at 30 °C. The catalyst longevity is limited because the carbonylation product reacts with the phosphorus atom of the ligand to give a quaternary phosphonium salt. This reaction leads to deactivation of the catalyst and eventually to palladium black formation.
PYRROLIDINE DERIVATIVES AS ERK INHIBITORS
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Page/Page column 204, (2010/11/28)
Disclosed are the ERK inhibitors of Formula (1.0): and the pharmaceutically acceptable salts and solvates thereof. Q is a piperidine or piperazine ring that can have a bridge or a fused ring. The piperidine ring can have a double bond in the ring. All other substitutents are as defined herein. Also disclosed are methods of treating cancer using the compounds of Formula (1.0).
Oxidative methoxycarbonylation of propyne and allene with carbon monoxide and methanol in the presence of copper-palladium catalyst
Mal'kina,Kudyakova,Nosyreva,Afonin,Trofimov
, p. 1088 - 1092 (2007/10/03)
A direct oxidative methoxycarbonylation of propyne with carbon monoxide in methanol medium in the presence of copper-palladium catalytic system results in methyl 2-butynoate in 18-31% yield. Depending on reaction conditions allene provides either a mixture of methyl 2-(chloromethyl)acrylate and methyl 2-(methoxymethyl)acrylate (~3-4:1) in overall yield 16-23%, or methyl 2-(methoxymethyl)acrylate in 19% yield.