US 5,206,419 A · 3-hydroxy-2,2-dimethylpropyl 3-hydroxy-2,2-dimethylpropanoate bis(acetoacetate)

Abstract

Process for the preparation of acetoacetates and other .beta.ketoesters is provided, involving reaction of nitrogen, oxygen or sulfur nucleophiles with a tertiaryalkyl acetoacetate or tertiaryalkyl .beta.-ketoester.

Claims1

Dependent claims

3-Hydroxy-2,2-dimethylpropyl 3-hydroxy-2,2-dimethylpropanoate bis(acetoacetate).

Dependencies are inferred from the claim text.

Facts

Application

07/840,541Filed 25 Feb 1992 · division

Priority

12 Dec 1988

Granted

27 Apr 1993

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

C07C 235/80
With the carbon atoms of the carboxamide groups bound to acyclic carbon atoms: having carbon atoms of carboxamide groups and keto groups bound to…
C07C 67/03
Preparation of carboxylic acid esters: by reacting an ester group with a hydroxy group
C07C 69/716
Of saturated acids: esters of keto-carboxylic acids or aldehydo-carboxylic acids
C07C 69/72
Esters of keto-carboxylic acids or aldehydo-carboxylic acids: acetoacetic acid esters

Family

Serial283,353Parent of this continuation-in-part · filed 12 Dec 1988

Serial484,595Parent of this continuation · filed 26 Feb 1990

Serial620,388Parent of this continuation · filed 30 Nov 1990

Serial735,082Parent of this division · filed 24 Jul 1991

US 5,113,011 AParent of this division

US 5,051,529 AParent of this continuation

US 5,206,419 AThis patent

From the US filing history. Foreign family members aren’t listed.

3-hydroxy-2,2-dimethylpropyl 3-hydroxy-2,2-dimethylpropanoate bis(acetoacetate)

Life of this patent

Abstract

Claims1

3-hydroxy-2,2-dimethylpropyl 3-hydroxy-2,2-dimethylpropanoate bis(acetoacetate)

Life of this patent

Abstract

Claims1