Patent · US Active

Isomer-selective synthesis of methanofullerenes

US9527797B1 · kind B1 · utility

5Cited by
2References
8Claims
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Inventors

Key dates

Filing dateMar 17, 2016
Grant dateDec 27, 2016
Priority date—
Expiry dateMar 17, 2036

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C2604/00
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

[6,6]-Phenyl C71 butyric acid derivatives (C70-PCBR3) having a selectivity of greater than 95 wt % of the α-isomer are provided by reacting fullerene C70 with a dialkyl sulfonium tetrafluoroborate having the formula:

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