Continuous process for the alkylation of ch-acid compounds with alkyl carbonates in gas-liquid phase transfer catalysis conditions
CA 1297898 C · Owner: Trotta, Franco · Inventors: Angeletti, Enrico; Trotta, Franco; Tundo, Pietro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, CONTINUOS PROCESS FOR THE ALKYLATION OF CH-ACID COMPOUNDS WITH ALKYL CARBONATES IN GAS-LIQUID PHASE TRANSFER CATALYSIS CONDITIONS, A continuos process for the alylation of CH-acid compounds with dialkyl carbonates in gas-liquid phase transfer catalysis conditions is described consisting of, contacting a mixture of a CH-acid compound (arylacetonitrile or malonic diester) and of a dialkylcarbonte op-, tionally added with an inert carrier (constituted by a polar or aprotic polar liquid or by a gas) with a cataly-, tic bed comprising alumina spheres carrying a base and a phase transfer catalyst.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.