Abstract
The synthesis of a hexaethynyl[2,3-g]pyrazinoquinoxaline and its crystal structure are reported. Starting from tetraaminobenzoquinone, condensation to bis(triisopropylsilyl)hexadiyne-2,3-dione affords 2,3,7,8- tetrakis(triisopropylsilylethynyl)pyrazino[2,3-g]quinoxaline-5,10-dione. Reaction with TIPS-CC-Li followed by reduction with hypophosphite in the presence of KI furnished the title molecule in a yield of 62%. Pd catalysis is not involved in any of these steps.
Original language | English (US) |
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Pages (from-to) | 757-760 |
Number of pages | 4 |
Journal | Organic Letters |
Volume | 8 |
Issue number | 4 |
DOIs | |
State | Published - Feb 16 2006 |
Externally published | Yes |
ASJC Scopus subject areas
- Biochemistry
- Physical and Theoretical Chemistry
- Organic Chemistry