Polyfunctional .alpha.-diazo-.beta.-keto esters and their use in light-sensitive compositions

US4996301A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Peter Wilharm · Meitingen, DE
• Hans-Joachim Merrem · Walldorf, DE
• Georg Pawlowski · Saitama, JP

Key dates

• Filing date: Jan 12, 1990
• Grant date: Feb 26, 1991
• Expiry date: Jan 12, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Polyfunctional .alpha.-diazo-.beta.-keto esters of the general formula I are described ##STR1## in which R.sup.1 denotes an aliphatic, cycloaliphatic or araliphatic or aromatic radical having 4 to 20 carbon atoms, in which individual CH.sub.2 groups can be replaced by oxygen or sulfur atoms or by N-- or NH groups and/or contain keto groups, PA0 X denotes an aliphatic, cycloaliphatic, carbocyclic, heterocyclic or araliphatic radical having 2 to 22 carbon atoms, in which individual CH.sub.2 groups can be replaced by oxygen or sulfur atoms or by the groups ##STR2## in which R.sup.2 and R.sup.3 independently of one another represent hydrogen or an aliphatic, carbocyclic or araliphatic radical, PA0 m denotes an integer from 2 to 10 and PA0 n denotes an integer from 0 to 2, wherein PA0 m-n is .gtoreq.2. The compounds mentioned are used as photoactive components in radiation-sensitive mixtures.