Synthesis of carbazole, acridine, phenazine, 4<i>H</i>-benzo[<i>def</i>]carbazole and their derivatives by thermal cyclization reaction of aromatic amines
synthesized by passing vapors of aromaticamines over calcium oxide at 450–650 °C under nitrogen carrier gas. Reaction of 2-aminobiphenyl 3a at 560 °C gave carbazole 4 in 80% yield. Reaction of 2, 2′-diaminobiphenyl 3b afforded a mixture of carbazole 4 and 4-aminocarbozole 6b. In the case of 2-amino-2′-nitrobiphenyl 3c, benzo[c]cinnoline 7 was obtained along with carbazole 4. Reaction of 2-amino-2′-methoxybiphenyl
Photolysis of 2-Amino-2′-azidobiphenyls: Formal Formation of Internally Trapped Didehydroazepines
作者:Shigeru Murata、Hiroshi Tsuji、Hideo Tomioka
DOI:10.1246/bcsj.67.895
日期:1994.3
Photolysis of 2-amino-2′-azidobiphenyls in diethylamine gave 4,10-dihydroazepino[2,3-b]indoles (7), the structure of which corresponded to the didehydroazepines formally trapped with an internal amino group. However, the yields of 7 were considerably low, which was due to the significant intramolecular interaction of the photolytically generated nitrene with an amino group, to afford benzo[c]cinnoline as a final product.
Keratin dyeing compounds, keratin dyeing compositions containing them, and use thereof
申请人:Glenn Wayne Robert
公开号:US20050217038A1
公开(公告)日:2005-10-06
Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and one or more tricyclic fused 6-5-6 heteroaromatic keratin dyeing compounds having one heteroatom. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.
Keratin Dyeing Compounds, Keratin Dyeing Compositions Containing Them, And Use Thereof
申请人:Glenn Wayne Robert
公开号:US20080098535A1
公开(公告)日:2008-05-01
Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and one or more tricyclic fused 6-5-6 heteroaromatic keratin dyeing compounds having one heteroatom. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.
A 4-aminocarbazole compound represented by formula (1):
wherein Ar
1
-Ar
4
represent substituted or unsubstituted aryl, thienyl, pyridyl, benzothienyl, dibenzothienyl, dibenzofuranyl, 4-carbazolyl, dibenzothienylphenyl, dibenzofuranylphenyl or 9-carbazolylphenyl group; R
1
-R
7
represent substituted or unsubstituted aryl, heteroaryl or heteroarylphenyl group, or alkyl, alkoxy, cyano group, or hydrogen or halogen atom; n is integer of 0-2; and X represents substituted or unsubstituted (n+1)-valent aromatic hydrocarbon, heteroaromatic or heteroarylphenyl group. The 4-aminocarbazole compound provides an organic EL device exhibiting enhanced emitting efficiency and durability.