杂蒽是有机电子学的潜在重要材料,其合成引起人们的关注。在这里,我们报告了催化合成的5,10-二氢吲哚并[3,2- b ]吲哚类杂并苯的氧化还原中性反应的发展。2-[(2-氮杂苯基)乙炔基]苯胺通过金(I)/铑(II)中继催化进行级联环化。对照实验表明,金(I)是用于第一个与苯胺部分的吲哚环化的有效催化剂,而第二个涉及叠氮化物部分的环化是由铑(II)催化的。该协议可提供多种N取代的N′-未取代的二氢吲哚并吲哚。通过碱促进的苯并呋喃环化反应,然后通过铑(II)催化的CH氨基化反应,还可以将2-[(2-氮杂苯基)乙炔基]酚转化为10 H-苯并呋喃[3,2- b ]吲哚。还报道了2-[((2-叠氮基苯基)乙炔基]联苯的相关级联环化反应。
Photochemical intramolecular amination for the synthesis of heterocycles
作者:Shawn Parisien-Collette、Corentin Cruché、Xavier Abel-Snape、Shawn K. Collins
DOI:10.1039/c7gc02261a
日期:——
formed in good to excellent yields via photochemical conversion of the corresponding substituted aryl azides under irradiation with purple LEDs in a continuous flow reactor. The experimental set-up is tolerant to UV-sensitive functional groups while affording diverse carbazoles, as well as an indole and pyrrole framework, in short reaction times. The photochemical method is presumed to progress through
CuSO<sub>4</sub>-Catalyzed dual annulation to synthesize O, S or N-containing tetracyclic heteroacenes
作者:Xiang-Huan Shan、Bo Yang、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1039/d0cc01172j
日期:——
In this work, CuSO4 is utilized as a practical redox catalyst for tandem dual annulation in the synthesis of indole-fused tetracyclic heteroacenes, which are important skeletons in both medicinal chemistry and materials chemistry.
Hetero polycyclic biocidal compounds, their synthesis and intermediates therefor,formulations containing them and their use in medicine
申请人:THE WELLCOME FOUNDATION LIMITED
公开号:EP0447703A1
公开(公告)日:1991-09-25
Heterotetracyclic aromatic compounds having biocidal activity containing two hetero atoms selected from oxygen, sulphur and nitrogen and that are substituted by an aminoalkanol group of formula
ArCH₂NHR
or a monomethyl or monoethyl ether thereof, the compound of formula (I) including these ethers containing no more than 29 carbon atoms in total, or an ester or a salt thereof; wherein Ar is a fused tetracyclic hetero aromatic ring system of the formula:
in which Z is oxygen, sulphur or a group NR¹ wherein R¹ is hydrogen, methyl or ethyl and
is a bicyclic aromatic ring system comprising a phenyl ring and a 5-membered ring system which contains one heteroatom Z¹ selected from oxygen, sulphur or a group NR² wherein R² is hydrogen, methyl or ethyl; the tetracyclic ring system being optionally substituted by one or two substituents;
and R contains not more than eight carbon atoms and is a group
wherein m is 0 or 1;
R⁶ is hydrogen or alkyl optionally substituted by hydroxy;
R⁷ and R⁸ are the same or different and each is hydrogen or alkyl;
R⁹ is hydrogen, methyl or hydroxymethyl;
is a five-or six-membered saturated carbocyclic ring;
R¹⁰, R¹¹ and R¹² are the same or different and each is hydrogen or methyl;
R¹³ is hydrogen, methyl, hydroxy, or hydroxymethyl; R¹⁴ is hydrogen, methyl, hydroxy or hydroxymethyl.
Processes for preparing the compounds, intermediates in their preparation, pharmaceutical compositions containing them and their use in medicine are also disclosed.
Synthesis and molecular properties of methoxy-substituted diindolo[3,2-b:2′,3′-h]carbazoles for organic electronics obtained by a consecutive twofold Suzuki and twofold Cadogan reaction
作者:Hassan Srour、Thu-Hong Doan、Elisabeth Da Silva、Richard J. Whitby、Bernhard Witulski
DOI:10.1039/c6tc02009g
日期:——
methoxy-substituted diindolo[3,2-b:2′,3′-h]carbazoles has been synthesized by twofold Suzuki–Miyaura, Cadogan and N-alkylation reactions starting from N-hexyl-2,7-dibromo-3,6-dinitro carbazole. Microwave accelerated reactions ensure a rapid straightforward and step-ecomomic assembly of the diindolo[3,2-b:2′,3′-h]carbazole framework. Besides the parent diindolo[3,2-b:2′,3′-h]carbazole four new methoxy-group bearing
一组甲氧基取代的吲哚并[3,2-的b:2',3'- ħ ]咔唑已由双重铃木-宫浦,加多并合成Ñ烷基化从开始反应ñ -己基-2,7-二溴3,6-二硝基咔唑。微波加速反应可确保diindolo [3,2- b:2',3'- h ]咔唑骨架的快速直接且逐步的组装。除了亲本diindolo [3,2- b:2',3'- h获得了咔唑的四种新的含甲氧基基团的衍生物,并通过热,光物理和电化学手段研究了它们的分子性质。相对于甲氧基取代图案,二吲哚并咔唑的二氯甲烷溶液显示出明亮的光致发光,覆盖了蓝色到绿色的光谱,量子产率为ϕ F = 0.20–0.27。值得注意的是,N,N,N-三-正己基-1,4,9,12-四甲氧基二吲哚并[3,2- b:2',3'- h ]咔唑表现出显着的聚集诱导的准分子型发光。 (EM λ最大= 562纳米,固体φF = 0.14)处于固态,导致发出明亮的黄色光,而母体未取代的化合物