Synthesis of new polydentate pyrazolyl‐ethene ligands by interaction of 1 H ‐pyrazole and 1,1,2,2‐tetrabromoethane in a superbasic medium | Zendy

Potapov Andrei S. | Zendy; Nudnova Evgenia A. | Zendy; Khlebnikov Andrei I. | Zendy; Ogorodnikov Vladimir D. | Zendy; Petrenko Tatiana V. | Zendy

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Synthesis of new polydentate pyrazolyl‐ethene ligands by interaction of 1 H ‐pyrazole and 1,1,2,2‐tetrabromoethane in a superbasic medium

Author(s) -

Potapov Andrei S.,

Nudnova Evgenia A.,

Khlebnikov Andrei I.,

Ogorodnikov Vladimir D.,

Petrenko Tatiana V.

Publication year - 2011

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.566

Subject(s) - chemistry , pyrazole , reagent , medicinal chemistry , denticity , potassium hydroxide , potassium , crystal structure , tris , organic chemistry , biochemistry

Reaction of pyrazole and 1,1,2,2‐tetrabromoethane in a superbasic medium dimethylsulfoxide‐potassium hydroxide was investigated, and a number of pyrazolyl‐ and bromo‐substituted ethenes, which are the products of concurrent substitution and elimination reactions , were identified. Carrying out the reaction using different reagent mole ratios allowed to selectively isolate Z ‐1,2‐bis(pyrazol‐1‐yl)ethene, 1,1,2‐tris(pyrazol‐1‐yl)ethane, and 1,1,2,2‐tetrakis(pyrazol‐1‐yl)ethane. Crystal structure of { Z ‐1,2‐bis (pyrazol‐1‐yl)ethene}dichlorozinc was established using X‐ray diffraction method. J. Heterocyclic Chem., (2011).

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