Process for preparing isoquinolines
US5332821A · kind A · utility
0Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 15, 1992 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | Jan 15, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D217/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of isoquinolines of the formula ##STR1## wherein R is methyl or benzyl and R' is phenyl, p-hydroxyphenyl or p-methoxyphenyl, by reacting a solution of an enamine of the formula ##STR2## wherein R and R' are as described above, in a hydrocarbon with an anhydrous solution of p-toluenesulphonic acid in toluene or xylene at an elevated temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.