EP 3844153 A1 20210707 - METHOD FOR PREPARING NITROPYRAZOLES
Title (en)
METHOD FOR PREPARING NITROPYRAZOLES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON NITROPYRAZOLEN
Title (fr)
PROCEDE DE PREPARATION DE NITROPYRAZOLES
Publication
Application
Priority
- FR 1800916 A 20180831
- FR 2019052007 W 20190830
Abstract (en)
[origin: WO2020043998A1] The present invention relates to a method for the sigmatropic rearrangement of a compound of formula (I) wherein R3 and R4 are as defined in the description, which consists in thermally treating said compound by microwaves.
IPC 8 full level
C07D 231/16 (2006.01)
CPC (source: EP US)
C07D 231/16 (2013.01 - EP US)
Citation (examination)
- GAWANDE MANOJ B. ET AL: "Microwave-Assisted Chemistry: Synthetic Applications for Rapid Assembly of Nanomaterials and Organics", ACCOUNTS OF CHEMICAL RESEARCH, vol. 47, no. 4, 25 March 2014 (2014-03-25), US, pages 1338 - 1348, XP093034380, ISSN: 0001-4842, Retrieved from the Internet <URL:https://pubs.acs.org/doi/pdf/10.1021/ar400309b> DOI: 10.1021/ar400309b
- NYFFENEGGER C ET AL: "An efficient route to polynitrogen-fused tricycles via a nitrene-mediated N-N bond formation under microwave irradiation", TETRAHEDRON, ELSEVIER SIENCE PUBLISHERS, AMSTERDAM, NL, vol. 64, no. 40, 29 September 2008 (2008-09-29), pages 9567 - 9573, XP023976407, ISSN: 0040-4020, [retrieved on 20080719], DOI: 10.1016/J.TET.2008.07.055
- See also references of WO 2020043998A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020043998 A1 20200305; EP 3844153 A1 20210707; FR 3085377 A1 20200306; FR 3085377 B1 20201113; US 11530185 B2 20221220; US 2021198210 A1 20210701
DOCDB simple family (application)
FR 2019052007 W 20190830; EP 19774159 A 20190830; FR 1800916 A 20180831; US 201917271492 A 20190830