Patent · US Active

Low pressure carbonylation of heterocycles

US7875734B2 · kind B2 · utility

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5References
8Claims
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Key dates

Filing dateJun 17, 2009
Grant dateJan 25, 2011
Priority date—
Expiry dateJun 17, 2029

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07D407/12
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Heterocycles, e.g., epoxides, are carbonylated at low pressure with high percentage conversion to cyclic, ring expanded products using the catalystwhere L is tetrahydrofuran (THF).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.