Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Sodium Azide | HCID 33557 | — |
| Reactant | 2,6-dichloro-4-phenylquinazoline | HCID 1628221 | — |
| Solvent | Dimethyl Sulfoxide | HCID 679 | — |
| Product | HCID 746189 | HCID 746189 | 96.7% |
Reaction Steps
The starting material may be prepared as follows: To a solution of 1.92 g of 2,6-dichloro-4-phenylquinazoline in 30 ml of dimethylsulfoxide was added 0.91 g of sodium azide. The mixture was heated at 100° C. for 1 hour with stirring and then poured into ice-water. The resulting precipitate was collected by filtration, washed with water and dried to give 1.9 g of 7-chloro-5-phenyltetrazolo[1,5-a]quinazoline. Recrystallization from chloroform-ethanol gave pale yellow needles, m.p. 209° C. (decomp.).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04183932 |
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| Source dataset | uspto-grants-1980_01 |
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| ORD ID | ord-59ceae5cb4b94eafbdac40ebef8bbc13 |
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| Source note | uspto-grants-1980_01 |
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