Process for the preparation of N-substituted halopyrrolidones
US4132713A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1977 |
| Grant date | Jan 2, 1979 |
| Priority date | — |
| Expiry date | Dec 23, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D207/273
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel process is disclosed herein for the preparation of N-substituted halopyrrolidones of the formula ##STR1## in which X is selected from the group consisting of hydrogen, chlorine, and methyl; PA1 Y is selected from the group consisting of hydrogen, chlorine, and bromine; PA1 Z is selected from the group consisting of chlorine and bromine; PA1 R.sup.1 is selected from the group consisting of hydrogen and C.sub.1 -C.sub.4 alkyl; and PA1 R.sup.2 is selected from the group consisting of C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 alkenyl, C.sub.1 -C.sub.6 haloalkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.4 -C.sub.8 cycloalkylalkyl, benzyl, chlorobenzyl, and ##STR2## in which R.sup.3 is selected from the group consisting og hydrogen, C.sub.1 -C.sub.4 alkyl, acetyl, chlorine, bromine, fluorine, iodine, trifluoromethyl, nitro, cyan, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 alkylsulfinyl, C.sub.1 -C.sub.4 alkylsulfonyl, trifluoromethylthio, trifluoromethylsulfinyl, trifluoromethylsulfonyl, pentafluoropropionamido, and 3-methylureido; and R.sup.4 is selected from the group consisting of hydrogen, C.sub.1 -C.sub.4 alkyl, chlorine, and trifluoromethyl; WHICH COMPRI…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.