Preparation method of tertiary amine compound

Abstract

The invention provides a preparation method of a tertiary amine compound, and belongs to the technical field of organic chemistry. The preparation method of the tertiary amine compound comprises the following steps: performing a carbon-nitrogen coupling reaction on a compound of chemical formula 2 and a compound of chemical formula 3 to obtain a compound of chemical formula 4; and carrying out thecarbon-nitrogen coupling reaction on the compound of chemical formula 4 and a compound of chemical formula 5 to obtain the compound of chemical formula 1, wherein the chemical formula 1, the chemicalformula 2, the chemical formula 3, the chemical formula 4 and the chemical formula 5 are shown in the description.

Description

Technical field [0001] The present disclosure relates to the technical field of organic chemistry, in particular to a method for preparing a tertiary amine compound. Background technique [0002] Organic electroluminescent device (OLED: Organic electroluminescent device) is gradually entering people's field of vision as a new generation of display technology. OLED is an electroluminescent device formed by a multilayer organic thin film structure, where the organic thin film is a film of organic light-emitting material formed on a substrate by vapor deposition, vapor deposition or spin coating. Compared with traditional display technology, it has great advantages in terms of voltage characteristics, luminous brightness, luminous efficiency, color quality, response speed, viewing angle, etc., and is low in cost, so it has a broad market prospect. [0003] Triarylamine compounds have good application prospects in organic electroluminescent devices, and are especially suitable as hole...

AI Technical Summary

Problems solved by technology

However, on the one hand, 3-bromodibenzofuran or 3-bromodibenzothiophene is not only expensive but also difficult to prepare, not only has long preparation steps, but also requires high-risk operations such as nitration and hydrogenation during the preparation process

On the other hand, many aryl primary amine compounds are highly harmful, such as 4-aminobiphenyl, 1-naphthylamine, 2-naphthylamine, etc. commonly used in the preparation of triarylamine compounds in the prior art are WHO Listed primary carcinogens

These factors hinder the synthesis, research and development of triarylamine compounds with 3-substituted dibenzothiophene or dibenzofuran connected to the nitrogen atom, and restrict the application of such triarylamine compounds in organic electroluminescent devices. , which also limits the development speed of the field of organic electroluminescent devices

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