o-Quinonoid Heterocycles: Synthesis and Crystal Structure of 2,3-Dicyano-5,7-bismethylthieno[3,4-b]pyrazine
2,3-Dicyano-5,7-bismethylthieno[3,4-b]pyrazine (5), has been obtained as a minor product from reactions of S-nucleophiles with 5,6-di(1-bromoethyl)pyrazine-2,3- dicarbonitrile (3), or from a condensation of 4-hydroxy-2,5-dimethyl-2,3-dihydrothiophen- 3-one (4) with diaminomaleonitrile. The molecular...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
MDPI AG
2007-07-01
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Series: | Molecules |
Subjects: | |
Online Access: | http://www.mdpi.com/1420-3049/12/8/1623/ |