PATENT CLAIM ANALYSIS

Application Number: 16071829
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["568", "484000"]

Abstract:
Disclosed is an industrial method for efficient production of an α,α-difluoroaldehyde compound, which includes reaction of an α,α-difluoroacetate with hydrogen gas (H 2 ) in the presence of a ruthenium catalyst and a base. By the adoption of specific reaction conditions (catalyst, base, pressure etc.), it is possible to produce the target α,α-difluoroaldehyde compound with a high conversion rate and high selectivity.

Claim (Index 1):
A method for producing an \u03b1,\u03b1-difluoroacetaldehyde of the formula [3] or \u03b1,\u03b1-difluoroacetaldehyde alkyl hemiacetal of the general formula [4], comprising reaction of an \u03b1,\u03b1-difluoroacetate of the general formula [1] with hydrogen in the presence of a ruthenium complex of the formula [2] and a base, in which R 1  represents an alkyl group or substituted alkyl group, in which Ph represents a phenyl group, in which R 2  has the same meaning as R 1  in the general formula [1], wherein the reaction is performed under conditions that: the base is an alkali metal alkoxide and is used in an amount of 0.001 mol or more per 1 mol of the \u03b1,\u03b1-difluoroacetate; and a pressure the hydrogen used is 1.0 MPa to 10 MPa in terms of absolute pressure, whereby a rate of conversion of the \u03b1,\u03b1-difluoroacetate during the reaction is 80% or higher; and a selectivity of the \u03b1,\u03b1-difluoroacetaldehyde or \u03b1,\u03b1-difluoroacetaldehyde alkyl hemiacetal formed from the \u03b1,\u03b1-difluoroacetate to \u03b2,\u03b2-difluoroethanol formed as a by-product during the reaction is in a range of \u03b1,\u03b1-difluoroacetaldehyde or \u03b1,\u03b1-difluoroacetaldehyde alkyl hemiacetal:\u03b2,\u03b2-difluoroethanol=90% or higher:10% or lower.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 95.0
- Lexical Diversity: 1.625
- Patent Class: 568.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15227628', '14761774', '15326808', '14667753', '14233629']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.670272997634773
- 35 USC 102 Novelty (BERT): 0.553955718448594
- Combined Prediction Score: 0.6586412697161551
- Mean Citation Score: 310.16462
- Max Citation Score: 386.5599
- Similarity Product: 341.4195381422997

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