Ethane derivatives

US4659502A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Julie E. Fearon · Hope, GB
• Wendy E. Smith · Lincoln, US
• George W. Gray · Corby, GB
• David Lacey · Hope, GB
• Kenneth J. Toyne · Cudworth, GB
• Georg Weber · Langen (Hessen), DE

Key dates

• Filing date: Jan 17, 1985
• Grant date: Apr 21, 1987
• Expiry date: Jan 17, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/3422
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Ethane derivatives of the formula I EQU R.sup.1 --A.sup.1 --CH.sub.2 CH.sub.2 --A.sup.2 --(A.sup.3).sub.n --R.sup.2 I wherein PA1 R.sup.1 is H, an alkyl group with 1-12 C atoms, in which one or two non adjacent CH.sub.2 groups can also be replaced by O atoms and/or CO groups and/or --O--CO-- groups and/or --CO--O groups, F, Cl, Br or R.sup.3 --A.sup.4 --Z.sup.1 --, PA1 R.sup.2 is --CN or --Z.sup.2 --A.sup.4 --CN, PA1 A.sup.1 is --A--, --A--A.sup.5 -- or --A.sup.5 --A--, PA1 A.sup.2 is an 1,4-phenylene group which is unsubstituted or substituted by one or two F and/or Cl atoms and/or CH.sub.3 groups and/or CN groups and in which one or two CH groups can also be replaced by N atoms, PA1 A is a 1,4-cyclohexylene group, in which one or two non adjacent CH.sub.2 groups can also be replaced by O atoms, or is a 1,3-dithiane-2,5-diyl group or 1,4-bicyclo(2,2,2)-octylene group, PA1 A.sup.3, A.sub.4 are each a 1,4-cyclohexylene group, in which one or two non adjacent CH.sub.2 groups can also be replaced by O atoms, or are each a 1,3-dithiane-2,5-diyl group, and PA1 A.sup.5 or a 1,4-phenylene group which is unsubstituted or substituted by one or two F and/or Cl atoms and/or CH.sub.3 groups an…