Abstract
4-Amino-1-hydroxy-8-methoxyanthraquinone has been synthestsed and alkylated with 1-nitropropane to give a mixture of 2- and 3-propyl compounds. Leuco-5-hydroxyquinizarin regiose1ectively reacts with n-propylamine and benzylamine to give 4-imino compounds, which are shown by 14N n.m.r. spectroscopy to exist in solution as zwitterions. The benzylamine is regioselectively alkylated with propanal to give 4-benzylamino-1,5-dihydroxy-2-propylanthraquinone. © 1986.
| Original language | English |
|---|---|
| Pages (from-to) | 3303-3309 |
| Number of pages | 6 |
| Journal | Tetrahedron |
| Volume | 42 |
| Issue number | 12 |
| Publication status | Published - 1986 |