PATENT CLAIM ANALYSIS

Application Number: 16083485
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-03
Patent Classification: ["549", "408000"]

Abstract:
Provided are a 4-sulfur pentafluoride phenol compound and a preparation method therefor, and a preparation method for a sulfur pentafluoride substituted benzopyran compound. According to the present invention, sulfur pentafluoride salicylaldehyde with multiple substituent groups is synthesized through a plurality of steps by using sulfur pentafluoride phenol as a raw material, and then the sulfur pentafluoride substituted benzopyran compound is synthesized on this basis. The method is simple and convenient, and low in cost; overcomes the defects that, at present, the number of types of sulfur pentafluoride phenols is small, and the synthesis of various sulfur pentafluoride substituted benzopyran compounds cannot be met; and has wide industrial application prospects.

Claim (Index 31):
The preparation method according to  claim 30 , wherein:\n the oxidant in step A is pyridinium chlorochromate and/or manganese dioxide; the molar ratio of compound III (b) to the oxidant in step A is from 1:2 to 1:20; the reaction temperature in step A is from 10\u00b0 C. to 30\u00b0 C.; the reaction time in step A is from 5 to 24 hours; the molar ratio of compound IV (b) to ethyl 4,4,4-trifluorocrotonate in step B is from 1:1.2 to 1:10; the weak base in step B is any one or a combination of at least two selected from a group consisting of triethylamine, potassium carbonate, cesium carbonate and cesium fluoride; the amount of the weak base used in step B is from 10 to 20 mL on the basis of 1 g of compound IV(b); the solvent in step B is any one or a combination of at least two selected from a group consisting of triethylamine, tetrahydrofuran, N,N-dimethylformamide and dimethyl sulfoxide; the reaction temperature in step B is from 80\u00b0 C. to 120\u00b0 C.; the reaction time in step B is from 10 to 72 hours; the base in step C is any one or a combination of at least two selected from a group consisting of potassium hydroxide, sodium hydroxide and lithium hydroxide; the molar ratio of compound V(b) to the base in step C is from 1:10 to 1:20; the temperature for the hydrolysis with a base in step C is from 20\u00b0 C. to 30\u00b0 C.; the time for the hydrolysis with a base in step C is from 1 to 5 hours; the acid in step C is hydrochloric acid and/or sulfuric acid.

Metadata:
- Claim Count in Document: 59.0
- Percentile: 97.0
- Lexical Diversity: 1.76812
- Patent Class: 549.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15572160', '12053775', '12562805', '13520023', '12882469']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7566124060607969
- 35 USC 102 Novelty (BERT): 0.500104675759384
- Combined Prediction Score: 0.7309616330306556
- Mean Citation Score: 230.615778
- Max Citation Score: 242.2043
- Similarity Product: 167.36707989609835

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test