On January 30, 2020, Yasukawa, Keiichi; Sawano, Shota; Okinaka, Keiji; Ogiwara, Toshinari; Shiomi, Takushi published a patent.Computed Properties of 38939-88-7 The title of the patent was Heterocyclic compound, organic electroluminescence element, and electronic device. And the patent contained the following:
The present invention relates to compound I, II or III [R1-R4 = independently Q1, Q2, etc.; with a proviso that at least one of R1-R4 is Q1, etc. and at least one of R1-R4 is Q2, etc.; X1 = oxygen atom, sulfur atom or C(R151)(R152); R101-R110 = independently H or substituent; R151, R152 = independently H or substituent; R151 and R152 may combine to form a ring; substituent in R101-R110, R151, R152 = independently (un)substituted aryl, (un)substituted heterocyclyl, (un)substituted alkyl, etc.; R161-R168 = H or substituent; substituent in R161-R168 = independently halo, (un)substituted aryl, (un)substituted heterocyclyl, etc.; * represents a bond site to carbon atom of benznene ring in I-III]. For example, compound IV was prepared via Pd(PPh3)4-catalyzed coupling reaction of 2-bromonitrobenzene with 4-dibenzofuranboronic acid, cyclization in the presence of PPh3 and treatment with 2,5-bis(9H-carbazol-9-ly)-3,6-difluoroterephthalonitrile. Title compound has TADF property and organic electroluminescent device comprising an invention compound exhibits high EQE. The experimental process involved the reaction of 2-Chloro-4-methyl-1-nitrobenzene(cas: 38939-88-7).Computed Properties of 38939-88-7
The Article related to heterocycle preparation organic electroluminescence element, Heterocyclic Compounds (More Than One Hetero Atom): Fused-Ring Systems With Two Or More Hetero Atoms, No More Than One Hetero Atom Per Ring and other aspects.Computed Properties of 38939-88-7
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics