Patent · US Active

Process for the preparation of spiro[2.5]octane-5,7-dione and spiro[3.5]nonane-6,8-dione

US9938228B2 · kind B2 · utility

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0References

1Claims

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Assignee

Boehringer Ingelheim International GmbH · DE

Inventors

Xiangle Jin · Shanghai, CN
Weitong Dong · Shanghai, CN
Yan Fu · Shanghai, CN
Jun Lu · East Longmeadow, US
Le Xie · Shanghai, CN
Wei Xu · Greenbelt, US
Jinsong Yang · Shanghai, CN
Qian Zhu · Shanghai, CN

Key dates

Filing date	Aug 28, 2015
Grant date	Apr 10, 2018
Priority date	—
Expiry date	Aug 28, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2602/50
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

This invention relates to methods for the synthesis of spiro[2.5]octane-5,7-dione and spiro[3.5]nonane-6,8-dione which are useful as intermediates in the manufacture of pharmaceutically active ingredients.

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