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 4):
The method according to  claim 1 ,\n wherein the \u03b1,\u03b1-difluoroacetate of the general formula [1] is ethyl \u03b1,\u03b1-difluoroacetate wherein the \u03b1,\u03b1-difluoroacetaldehyde alkyl hemiacetal of the general formula [4] is \u03b1,\u03b1-difluoroacetaldehyde ethyl hemiacetal, wherein the base is sodium ethoxide and is used in an amount of 0.01 to 5.0 mol per 1 mol of the ethyl \u03b1,\u03b1-difluoroacetate; wherein the pressure of the hydrogen used is 2.0 MPa to 6.0 MPa in terms of absolute pressure, wherein the rate of conversion of the ethyl \u03b1,\u03b1-difluoroacetate during the reaction is 90% or higher; and wherein the selectivity of the \u03b1,\u03b1-difluoroacetaldehyde or \u03b1,\u03b1-difluoroacetaldehyde ethyl hemiacetal formed from the ethyl \u03b1,\u03b1-difluoroacetate to \u03b2,\u03b2-difluoroethanol formed as a byproduct during the reaction is in a range of \u03b1,\u03b1-difluoroacetaldehyde or \u03b1,\u03b1-difluoroacetaldehyde ethyl hemiacetal:\u03b2,\u03b2-difluoroethanol=93% or higher:7% or less.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 95.0
- Lexical Diversity: 1.625
- Patent Class: 568.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15227628', '14761774', '15326808', '14667753', '14233629']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6970730783626653
- 35 USC 102 Novelty (BERT): 0.5551666336595303
- Combined Prediction Score: 0.6828824338923518
- Mean Citation Score: 310.16462
- Max Citation Score: 386.5599
- Similarity Product: 304.9942075994253

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