Title:
NOVEL PROCESS FOR PREPARATION OF SPIRO[2.5]OCTANE-5,7-DIONE AND SPIRO[3.5]NONANE-6,8-DIONE
Document Type and Number:
WIPO Patent Application WO/2016/037534
Kind Code:
A1
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.
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Inventors:
JIN XIANGLE (CN)
DONG WEITONG (CN)
FU YAN (CN)
LU JUN (CN)
XIE LE (CN)
XU WEI (CN)
YANG JINSONG (CN)
ZHU QUIAN (CN)
DONG WEITONG (CN)
FU YAN (CN)
LU JUN (CN)
XIE LE (CN)
XU WEI (CN)
YANG JINSONG (CN)
ZHU QUIAN (CN)
Application Number:
PCT/CN2015/088345
Publication Date:
March 17, 2016
Filing Date:
August 28, 2015
Export Citation:
Assignee:
BOEHRINGER INGELHEIM INT (CN)
International Classes:
C07C45/45; C07C49/317; C07C69/608
Domestic Patent References:
| WO2014020038A1 | 2014-02-06 | |||
| WO2012052451A1 | 2012-04-26 | |||
| WO2012085166A1 | 2012-06-28 | |||
| WO2012052451A1 | 2012-04-26 | |||
| WO2012085166A1 | 2012-06-28 | |||
| WO2014020038A1 | 2014-02-06 | |||
| WO1999014174A1 | 1999-03-25 | |||
| WO2004054564A1 | 2004-07-01 |
Foreign References:
| US20080194609A1 | 2008-08-14 | |||
| US20050043341A1 | 2005-02-24 | |||
| US20080194609A1 | 2008-08-14 |
Other References:
LEHMANN, THOMAS E. ET AL.: "Process Development and Pilot Plant Scale Synthesis of Spiro[3.5]nonane-6, 8-dione", ORGANIC PROCESS RESEARCH & DEVELOPMENT, vol. 7, no. 6, 26 August 2003 (2003-08-26), pages 913 - 916, XP055417083
ANGEW. CHEM. INTL. ED., vol. 38, no. 22, 1999, pages 3373 - 3375
ANGEW. CHEM. INTL. ED., vol. 38, no. 22, 1999, pages 3373 - 3375
Attorney, Agent or Firm:
WU, FENG & ZHANG (21st Floor A/D,8 Haidian st., Haidian, Beijing 0, CN)
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