Rhodamine Fluorescent Compound Synthesis with Controlled Crystallization

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Solution Overview

Problem

The synthesis of rhodamine dyes is challenging due to their high reactivity, requiring special conditions and techniques, making them costly to produce.

Innovation Solution

A method involving the mixing of compound A and compound B at a first temperature, followed by the addition of oleum at a second temperature, to form a dye-intermediate, which includes specific substituents and optional bonding configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional synthesis methods are used for rhodamine dyes, then the dyes can be produced with required purity, but the production cost is high and the process is complex

Engineering Contradiction:

Improvesynthesis process simplicityVSAvoiddye purity

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent modifies the conventional synthesis parameters by changing the order of reagent addition and temperature profiles. Specifically, the reaction is conducted at elevated temperatures (60-100°C) followed by controlled cooling, which simplifies the process while maintaining product purity through selective crystallization during the cooling phase.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The synthesis process is segmented into distinct phases: (1) heating phase at 60-100°C for reaction completion, (2) controlled cooling phase for crystallization, and (3) filtration phase for product isolation. This segmentation allows each step to be optimized independently, simplifying the overall process while ensuring purity.

Inventive Principle:

Principle #1Segmentation

2Productivity

If conventional synthesis methods are used for rhodamine dyes, then the dyes can be produced with required quality, but the production time and cost increase

Engineering Contradiction:

Improveproduction efficiencyVSAvoidsynthesis time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The synthesis method maintains continuous useful action by conducting the reaction at elevated temperatures (60-100°C) to ensure complete conversion, then utilizing the cooling process itself for crystallization rather than requiring separate cooling and filtration steps. This continuous approach reduces total synthesis time while maintaining high productivity.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The method performs preliminary heating to complete the reaction before initiating the cooling-crystallization sequence. By ensuring complete reaction conversion beforehand, the subsequent cooling phase can focus solely on product isolation, reducing overall synthesis time and improving productivity.

Inventive Principle:

Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method simplifies the synthesis process, potentially reducing production costs and improving efficiency in producing rhodamine dyes.

Implementation Method 1

mixing compound A and compound B together in a reaction vessel at a first temperature to form a dye-intermediate

Methodology Applied

Scientific EffectCondensation reaction: Chemical Bonding

Implementation Method 2

adding oleum to the reaction vessel at a second temperature

Methodology Applied

Scientific EffectElectrophilic aromatic substitution: Chemical Bonding

Data Source

PatentUS20250297107A1Rhodamine fluorescent compounds and methods of use thereof

Publication Date: 2025.09.25 SINGULAR GENOMICS SYSTEMS INC

AI summary

Disclosed herein, inter alia, are fluorescent compounds and methods of making and using thereof.