Process for the preparation of 10-(halophenyl)-2,3,4,10-tetrahydropyrimido-[1,2-a]indol-10-ol
US3976645A · kind A · utility
3Cited by
2References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1974 |
| Grant date | Aug 24, 1976 |
| Priority date | — |
| Expiry date | Dec 9, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D209/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a process for preparing pyrimido[1,2-a]indoles of general formula (I) ##SPC1## wherein R is hydrogen or lower alkyl and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each hydrogen, hydroxyl, lower alkyl, lower alkoxy, trifluoromethyl or halogen by cyclodehydrating an indole derivative of general formula (II) ##SPC2## The products of formula (I) are useful as antidepressants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.