PATENT CLAIM ANALYSIS

Application Number: 16089486
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-04
Patent Classification: ["544", "284000"]

Abstract:
This disclosure provides a process for preparing 1-(arylmethyl)quinazoline-2,4(1H,3H)-diones, specially provides a method for preparing the compound of Formula I, and the method comprises the step of reacting the compound of Formula II with the compound of Formula A in the presence of a condensation agent, an organic base and an organic solvent by condensation.

Claim (Index 36):
The method of  claim 35 , wherein, after the obtained solid from the filtration is slurried with the organic solvent at 0\u02dc5\u00b0 C. and filtered again, the resultant product is subjected to recrystallization comprising dissolving the resultant product in DMSO, with a volume ratio of DMSO to the reaction product I not greater than 10, stirring the resultant mixture at 15\u02dc25\u00b0 C. for 2\u02dc4 hours; adding pure water, with a volume ratio of water to the reaction product I not greater than 10, dropwise within 2 hours; stirring the resultant mixture at 15\u02dc25\u00b0 C. for 8\u02dc40 hours and filtering; slurrying the obtained filter cake with pure water, with a volume ratio of pure water to the reaction product I not greater than 10, at the above temperature for 4\u02dc6 hours again, filtering, and washing the filter cake with pure water and drying under vacuum to provide the purified compound of Formula I.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 97.0
- Lexical Diversity: 1.69231
- Patent Class: 544.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16070658', '15181348', '11920078', '13059333', '11873671']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7617952417509607
- 35 USC 102 Novelty (BERT): 0.4890235614077688
- Combined Prediction Score: 0.7345180737166415
- Mean Citation Score: 227.750204
- Max Citation Score: 238.44398
- Similarity Product: 178.66218075264217

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