Invention Grant
- Patent Title: Compound of synthetic intermediate
- Patent Title (中): 合成中间体的化合物
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Application No.: US14984262Application Date: 2015-12-30
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Publication No.: US09586909B2Publication Date: 2017-03-07
- Inventor: Hideko Inoue , Tomohiro Kubota , Miki Kanamoto
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP
- Agency: Husch Blackwell LLP
- Priority: JP2013-245957 20131128
- Main IPC: H01L29/08
- IPC: H01L29/08 ; C07D241/18 ; H01L51/00 ; C07F15/00 ; C07D241/12 ; C09K11/06 ; H01L51/50

Abstract:
Provided is a 5,6-diaryl-2-pyrazyl triflate, its synthetic method, and a method for synthesizing an organometallic complex having a triarylpyrazine ligand from the 5,6-diaryl-2-pyrazyl triflate. The triflate is readily obtained from the corresponding 5,6-diarylpyrazin-2-ol, and the palladium-catalyzed coupling of the 5,6-diaryl-2-pyrazyl triflate with an arylboronic acid derivative leads to a high yield of a triarylpyrazine derivative having high purity. The use of the triarylpyrazine derivative in the reaction with a metal compound such as a metal chloride results in an ortho-metallated organometallic complex with high purity. The high purity of the organometallic complex contributes to the extremely high durability of a light-emitting element.
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