TAILIEUCHUNG - An attempt to planarize 2,3,5,6 tetraarylthieno[3,2 b]thiophene by FeCl3 assisted annulation

In this work, an attempt to planarize 2,3,4,6- tetraarylthieno[3,2-b]thiophene based on the FeCl3 oxidative annulation was described. Thus, two cyclized 2,3,5,6-tetraarylthieno[3,2-b]thiophenes 5a and 5b were synthesized in moderate yields. NMR and HR-MS analysis indicated the annulation between only one pair of the phenyl substituents. | JOURNAL OF SCIENCE OF HNUE DOI Natural Sci. 2016 Vol. 61 No. 9 pp. 34-41 This paper is available online at http AN ATTEMPT TO PLANARIZE 2 3 5 6-TETRAARYLTHIENO 3 2-b THIOPHENE BY FeCl3-ASSISTED ANNULATION Nguyen Hien1 and Nguyen Thi Lieu2 1 Faculty of Chemistry Hanoi National University of Education 2 Faculty of Chemistry Hanoi Metropolitan University Abstract. Thieno 3 2-b thiophene is a typical core structure in a number of conjugated organic opto-electronic materials. In this work an attempt to planarize 2 3 4 6- tetraarylthieno 3 2-b thiophene based on the FeCl3 oxidative annulation was described. Thus two cyclized 2 3 5 6-tetraarylthieno 3 2-b thiophenes 5a and 5b were synthesized in moderate yields. NMR and HR-MS analysis indicated the annulation between only one pair of the phenyl substituents. Keywords Thieno 3 2-b thiophene Suzuki-Miyaura reaction FeCl3 oxidative annulation. 1. Introduction Thieno 3 2-b thiophene TT has been used as a key monomer or incorporated in functionalized oligomers and polymers developed as p-type organic semi-conductors optoelectronics and electroluminescence 1 . The inter-molecular sulfur-sulfur interactions allow materials containing this core structure to increase the electronic transport between adjacent molecules. Skabara and co-workers reported on the synthesis of two novel TT-based conjugated molecules A and B starting from Stille coupling reactions of dibromo_TTand stannylthiophenes Figure 1 2 . Electro-chemical and optical investigations provided the repeating band gaps as and eV for A and and eV for B. While non-covalent S O interactions in A resulted in a planar conformation and hence a high degree of conjugation length the twisted conformation was observed for the 3 4-ethylenedithiothiophene analogue B. As expected the hole mobilities for A and B were reported to be and 10 2cm2V 1s 1 respectively. A similar phenomenon was observed by Frere who .

• Vật lý
• Natural sciences
• Thieno [3
• 2 b] thiophene
• Suzuki Miyaura reaction
• FeCl3 oxidative annulation
• Organic opto electronic materials
• Giới thiệu Thư viện số
• Natural Sciences Digital Library
• Thư viện số
• Digital Library
• Bộ sưu tập Thư viện số
• Summary of Doctoral Thesis
• Educational Sciences
• Methodology in Biology
• Developing textbooks’ models
• Orientation of competency development
• Methods of teaching natural science
• Annals of Agricultural Sciences
• Agricultural Sciences
• Khoa học nông nghiệp
• Natural preservatives
• Cold storage
• the natural sciences
• the social sciences
• conduct and misconduct
• Misconduct and why it occurs
• misconduct affecting
• the truth claims
• Molecular cryocrystal
• Elastic moduli
• Elastic wave
• Elastic constants
• Mathematical sciences
• Physical sciences
• Sciences
• Mathematics
• GMAT
• math test
• McGraw Hills GMAT
• Environmental sciences
• Earth sciences
• Natural organic matters removal
• Water purification
• DBPs control
• Technology sciences
• Vecny este epoxy alkyd
• Tính chất điện
• Độ bền dung môi
• Độ bền nhiệt
• Detailed checklist
• Field labels
• Grammitid specimens
• VNU University of Science
• Xác định biên
• Dị thường từ
• Dị thường trọng lực
• Bắc Việt Nam
• Mỡ cá tra
• Etyl cacboxylate
• Etyl biodiesel
• Este axit omega 3 6 9
• Phương pháp đồng dung môi
• Đồng dung môi
• Hợp chất chứa dị vòng
• Chất xúc tác
• Phản ứng Sonogashira
• Hợp chất dị vòng năm cạnh
• Phản ứng Click
• Nano đồng
• Nano silica
• Khả năng kháng nấm
• Pyricularia oryzae
• Rhizoctonia solani
• Phân loại thực vật
• Lạng Sơn
• Aspidistra papillata
• Plant taxonomy
• Arachniodes simplicior
• Flora of Vietnam
• New record
• Phản ứng ngưng tụ croton
• Hoạt tính kháng khuẩn
• Chương trình PASS
• Dẫn xuất thiopodand
• Vật liệu nano
• Tính chất quang
• Tính chất từ
• Vật liệu nano HoFeO3
• Cảm biến miễn dịch điện hóa
• Kháng thể IgY
• Virus Newcastle
• Bình phản ứng mini
• Xúc tác lưỡng kim loại Co2Cu2
• CI NEB cơ chế phản ứng
• Phản ứng hydrogen hóa carbon monoxide
• Bọ rùa hai mảng đỏ
• Lemnia biplagiata
• Tỷ lệ sống sót
• Tỷ lệ vào nhộng
• Năng ăn con mồi
• Chất lượng nước
• Động vật nổi
• Thành phần loài
• Kênh Bún Xáng
• Đa dạng sinh học
• Camphor
• science and technology
• scientific reports
• research projects
• scientific research
• Natural resources
• Research
• Natural radioactivity
• Major and accessory minerals
• Gamma ray spectrometry
• Wall rock granitoids
• Natural sciences and Technology
• Immune cells expansion
• Peripheral blood
• Immune cell therapy
• Natural killer cells
• Cytotoxic T lymphocytes
• Peripheral blood mononuclear cells