PATENT CLAIM ANALYSIS

Application Number: 15925444
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["560", "204000"]

Abstract:
The metal-catalyzed alkoxycarbonylation of a lactone is a method of alkoxycarbonylating a δ-lactone, specifically 3-ethylidene-6-vinyltetrahydro-2H-pyran-2-one. The method includes combining the δ-lactone with an alcohol in an organic solvent in the presence of a catalyst system that includes palladium or a salt thereof to form a reaction mixture, which is heated to 110-130° C. at a pressure of 20-50 bar for between 3-5 hours under flow of carbon monoxide gas. The product of the reaction is a substituted 2-octendioate diester. The alcohol may be methyl alcohol, n-butyl alcohol, 2-ethylhexanol, isobutyl alcohol, isopropyl alcohol, benzyl alcohol, or phenol. The solvent may be toluene, acetonitrile, or tetrahydrofuran. The method may include adding an acid to the reaction mixture, which may be dilute (about 5 mol %) sulfuric or p-toluenesulfonic acid. The catalyst system may also include a phosphine ligand.

Claim (Index 19):
An alkoxycarbonylated \u03b4-lactone having the formula: wherein R is selected from the group consisting of methyl, n-butyl, 2-ethylhexanyl, isobutyl, isopropyl, benzyl, and phenyl.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 90.0
- Lexical Diversity: 1.87952
- Patent Class: 560.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15213435', '15213449', '15213441', '15649743', '15651042']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7548439437243155
- 35 USC 102 Novelty (BERT): 0.5238627471928631
- Combined Prediction Score: 0.7317458240711703
- Mean Citation Score: 218.90872
- Max Citation Score: 226.79967
- Similarity Product: 156.38593688079715

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test