Process for the preparation of morpholine and piperidine derivatives
US4384116A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1981 |
| Grant date | May 17, 1983 |
| Priority date | — |
| Expiry date | Feb 2, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D295/023
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to an improved process for the preparation of fungicidally active compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 individually are lower alkyl of from 1 to 4 carbons or halo-(lower alkyl) of from 1 to 4 carbons or R.sub.1 and R.sub.2 together with the carbon to which they are attached form a 3 to 7 membered cycloalkyl ring or lower alkyl-substituted cycloalkyl of from 4 to 9 carbons, R.sub.3, R.sub.4 and R.sub.5 individually are hydrogen or lower alkyl of from 1 to 4 carbons and X is methylene or oxygen, and salts of those compounds which are basic. The improved process comprises the reaction of a compound of the formula, ##STR2## wherein R.sub.3, R.sub.4, R.sub.5 and X have the significance given hereinabove, with a compound which forms a carbonium ion of the formula ##STR3## wherein R.sub.1 and R.sub.2 have the significance as given hereinabove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.