PATENT CLAIM ANALYSIS

Application Number: 15763472
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["548", "376100"]

Abstract:
The present invention relates to method for the preparation of 3-fluoroalkyl-1-methylpyrazol-4-carboxylic acid, wherein it comprises the following steps: step 1, fluoroacetyl fluoride derivative shown in Formula I undergoes condensation with dimethylamino vinyl methyl ketone, as a result, 3-dimethylamino methylene-fluoro-2,4-pentanedione derivative shown in Formula II is formed; step 2, ring closing reaction takes place between said 3-dimethylamino methylene-fluoro-2,4-pentanedione shown in Formula II and methylhydrazine, in this way, 3-fluoroalkyl-1-methyl-4-acetyl pyrazol derivative shown in Formula III is obtained; step 3, the said 3-fluoroalkyl-1-methyl-4-acetyl pyrazol derivative shown in Formula III is oxidized in the presence of alkali, and then acidified, in this way, 3-fluoroalkyl-1-methylpyrazol-4-carboxylic acid shown in Formula IV is formed. Preparing method of present invention, wherein the required preparing route is simple, the raw material cost is low, the resulting yield of each step is high, and it is suitable for industrialization.

Claim (Index 6):
The method for the preparation of 3-fluoroalkyl-1-methylpyrazol-4-carboxylic acid of  claim 1 , wherein in step 3, the reaction temperature is 0\u02dc50\u00b0 C., and the reaction time is 1\u02dc5 h.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 90.0
- Lexical Diversity: 1.91566
- Patent Class: 548.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15737483', '14009483', '16325717', '13653615', '12808137']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7148101462432138
- 35 USC 102 Novelty (BERT): 0.5039992569342979
- Combined Prediction Score: 0.6937290573123223
- Mean Citation Score: 228.84203
- Max Citation Score: 258.68344
- Similarity Product: 203.07384650188928

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