Fluorinated β-lactones and poly(β-hydroxyalkanoate)s: synthesis via epoxide carbonylation and ring-opening polymerization
摘要:
Efficient and mild reaction conditions were developed for the catalytic carbonylation of fluorinated epoxides to their corresponding beta-lactones. Six new lactones with fluorinated side chains were prepared in high isolated yields. These lactones were polymerized to form a series of new poly(beta-hydroxy-alkanoate)s with fluorinated side chains, and their properties were examined with respect to their hydrocarbon analogs. Finally, copolymerizations were performed with fluorinated lactones and beta-butyrolactone, which resulted in tapered copolymers rather than the expected random copolymers. (C) 2008 Elsevier Ltd. All rights reserved.
Acrylonitrile Derivatives from Epoxide and Carbon Monoxide Reagents
申请人:Novomer, Inc.
公开号:US20190002400A1
公开(公告)日:2019-01-03
The present invention is directed to reactor systems and processes for producing acrylonitrile and acrylonitrile derivatives. In preferred embodiments of the present invention, the processes comprise the following steps: introducing an epoxide reagent and carbon monoxide reagent to at least one reaction vessel through at least one feed stream inlet; contacting the epoxide reagent and carbon monoxide reagent with a carbonylation catalyst to produce a beta-lactone intermediate; polymerizing the beta-lactone intermediate with an initiator in the presence of a metal cation to produce a polylactone product; heating the polylactone product under thermolysis conditions to produce an organic acid product; optionally esterifying the organic acid product to produce one or more ester products; and reacting the organic acid product and/or ester product with an ammonia reagent under ammoxidation conditions to produce an acrylonitrile product.
Heterocycles, e.g., epoxides, are carbonylated at low pressure with high percentage conversion to cyclic, ring expanded products using the catalyst
where L is tetrahydrofuran (THF).
PROCESSES FOR PRODUCING BETA-LACTONE AND BETA-LACTONE DERIVATIVES WITH HETEROGENOUS CATALYSTS
申请人:Novomer, Inc.
公开号:US20190047972A1
公开(公告)日:2019-02-14
The present invention is directed to processes from producing beta-lactone and beta-lactone derivatives using heterogenous catalysts. In preferred embodiments of the present invention, the processes comprise the steps: passing a feed stream comprising an epoxide reagent and a carbon monoxide reagent to a reaction zone; contacting the epoxide reagent and the carbon monoxide reagent with a heterogenous catalyst to produce a beta-lactone product in the reaction zone; and removing the beta-lactone product from the reaction zone. In preferred embodiments, the heterogenous catalyst comprises a solid support containing a cationic Lewis acid functional group and a metal carbonyl compound comprising at least one of anionic metal carbonyl compound or a neutral metal carbonyl compound. In certain preferred embodiments, the epoxide reagent and carbon monoxide reagent have a biobased content.
Systems and processes for thermolysis of polylactones to produce organic acids
申请人:Novomer, Inc.
公开号:US10457624B2
公开(公告)日:2019-10-29
Reactor systems and processes produce organic acids through thermolysis of polylactones. The reactor systems and processes introduce at least one epoxide reagent and carbon monoxide reagent to at least one reaction vessel through at least one feed stream inlet. The epoxide reagent and carbon monoxide reagent contact at least one carbonylation catalyst to produce at least one beta-lactone intermediate. The beta-lactone intermediate is polymerized with at least one initiator in the presence of a metal cation to produce at least one polylactone product. The polylactone product is heated under thermolysis conditions to produce at least one organic acid product. The processes control the presence of contaminates, impurities, catalytic materials, and/or reagents to provide for highly pure organic acid products.
Processes for producing beta-lactone with heterogenous catalysts
申请人:Novomer, Inc.
公开号:US10590099B1
公开(公告)日:2020-03-17
The present invention is directed to processes from producing beta-lactone and beta-lactone derivatives using heterogenous catalysts. In preferred embodiments of the present invention, the processes comprise the steps: passing a feed stream comprising an epoxide reagent and a carbon monoxide reagent to a reaction zone; contacting the epoxide reagent and the carbon monoxide reagent with a heterogenous catalyst to produce a beta-lactone product in the reaction zone; and removing the beta-lactone product from the reaction zone. In preferred embodiments, the heterogenous catalyst comprises a solid support containing a cationic Lewis acid functional group and a metal carbonyl compound comprising at least one of anionic metal carbonyl compound or a neutral metal carbonyl compound. In certain preferred embodiments, the epoxide reagent and carbon monoxide reagent have a biobased content.