Published August 1, 2019
| Version v1
Journal article
Recyclization of 4H-chromen-4-imine derivatives under the influence of dinucleophiles with the formation of functionally substituted pyrazoles
Creators
- 1. Ukrainian State University of Chemical Technology (Ukraine)
- 2. Moscow M. V. Lomonosov State University (Russian Federation)
- 3. National Academy of Sciences of Ukraine, A. V. Bogatsky Physico-Chemical Institute (Ukraine)
Description
It has been established that the recyclization of 2-aryl-4H-chromen-4-imines under the influence of thiosemicarbazide as N-dinucleophile is completed by the formation of 3-aryl-5-(o-hydroxyaryl)-1H-pyrazole-1-carbothioamides by the 5-exo-trig-cyclization mechanism. Aromatic acid hydrazides (isonicotinic, benzoic, salicylic, and 4-methoxybenzoic) enter into a similar reaction with the participation of an excess of piperidine to form 1H-pyrazol-5-ylphenols. Graphic abstract:
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Additional details
Identifiers
Publishing Information
- Journal Title
- Monatshefte fuer Chemie
- Journal Volume
- 150
- Journal Issue
- 8
- Journal Page Range
- p. 1487-1493
- ISSN
- 0026-9247
- CODEN
- MOCHAP
INIS
- Country of Publication
- Austria
- Country of Input or Organization
- Austria
- INIS RN
- 52036266
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- AROMATICS; CARBOXYLIC ACIDS; CYCLIZATION; IMINES; PIPERIDINES; PYRAZOLES; RECYCLING
- Descriptors DEC
- AMINES; AZINES; AZOLES; CHEMICAL REACTIONS; HETEROCYCLIC COMPOUNDS; HYDROCARBONS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PYRIDINES
Optional Information
- Copyright
- Copyright (c) 2019 Springer-Verlag GmbH Austria, part of Springer Nature