Heterozygote of adjacent naphthoquinone and tetrazol-pyrimidine and synthetic method thereof
A technology of tetrazolium and aminotetrazolium, which is applied in the field of hybrids and achieves the effects of easy availability of raw materials, high yield and simple operation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0018] Example 1
[0019] Put 0.85 g 5-aminotetrazolium, 0.6 g paraformaldehyde, 1.74 g 2-hydroxy-1,4-naphthoquinone and 0.15 g p-toluenesulfonic acid in a 25 ml reaction flask, mix well, heat and stir, Keep it at 120°C and react for 1 hour. The reaction mixture was dissolved in 25 ml of dichloromethane, washed twice with 25 ml of water, dried with anhydrous sodium sulfate, evaporated to remove the solvent, and recrystallized with ethanol to obtain the corresponding yellow product 4,6-dihydro-benzo[ h ]Tetrazolium[5,1- b ] Quinazoline-7,8-dione 1.92 g, the yield was 76%.
[0020] After testing, molecular formula: C 12 H 7 N 5 O 2 , Molecular weight: 253.06, appearance: yellow solid, melting point: >400℃;
[0021] IR (KBr): v 1672, 1656, 1589, 1573, 1308, 1072, 949, 720 cm -1 ;
[0022] 1 H NMR (400 MHz, DMSO- d 6 ) δ : 11.79 (s, 1H), 8.05 (dd, 1H,, J = 7.2, 17.6 Hz), 7.93-7.84 (m, 2H), 5.39 (s, 2H);
[0023] 13 C NMR (100 MHz, DMSO- d 6 ) δ : 181.4, 178.7, 149.6, 139.5, 135.6, 134...
Example Embodiment
[0025] Example 2
[0026] Put 4.25 g 5-aminotetrazolium, 3.3 g paraformaldehyde, 8.7 g 2-hydroxy-1,4-naphthoquinone and 0.75 g p-toluenesulfonic acid in a 100 ml reaction flask, mix well, heat and stir, Keep it at 125 ℃ and react for 2 hours. The reaction mixture was dissolved in 150 ml of dichloromethane, washed twice with 150 ml of water, dried with anhydrous sodium sulfate, evaporated to remove the solvent, and recrystallized with ethanol to obtain the corresponding yellow product 4,6-dihydro-benzo[ h ]Tetrazolium[5,1- b ] Quinazoline-7,8-dione 10.21 g, the yield was 81%.
Example Embodiment
[0027] Example 3
[0028] Put 8.5g 5-aminotetrazolium, 7.5 g paraformaldehyde, 17.4 g 2-hydroxy-1,4-naphthoquinone and 1.5 g p-toluenesulfonic acid in a 250 ml reaction flask, mix well, heat and stir, Control it at 130°C and react for 3 hours. The reaction mixture was dissolved in 300 ml of dichloromethane, washed twice with 300 ml of water, dried with anhydrous sodium sulfate, evaporated to remove the solvent, and recrystallized with ethanol to obtain the corresponding yellow product 4,6-dihydro-benzo[ h ]Tetrazolium[5,1- b ] Quinazoline-7,8-dione 18.98 g, the yield was 74%.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap