已经建立了吡啶并[2,1- a ]异吲哚与主族和过渡金属元素的各种结合方式。吡啶并[2,1- a ]异吲哚的6位碳原子高度亲核,与Pt(II)离子形成σ络合物。吡啶并苯环[2,1-一个]异吲哚形成η 6 -π复杂含Cr(0)。在质子海绵的存在下,吡啶并[2,1- a ]异吲哚与PPh 2 Cl的反应生成PPh 2-官能化的产物,该产物可以进一步与BH 3分子反应,形成P→B加合物。吡啶基[2,1- a还发现]异吲哚在Cu(I)离子存在下发生脱氢CC偶联反应,形成二聚体。这些有趣的反应性和结合模式证明了吡啶并[2,1- a ]异吲哚的丰富化学性质及其在主族和过渡金属化学中的潜在应用。
Formation of an air-stable diborane <i>via</i> a stepwise BH<sub>3</sub> addition of pyrido[1,2-<i>a</i>]isoindole with H<sub>2</sub> evolution
作者:Jiaqi Dong、Lutao Zhang、Dehui Tan、Jianfeng Wu、Nan Wang、Soren K. Mellerup、Suning Wang、Deng-Tao Yang
DOI:10.1039/d1cc04228a
日期:——
five-membered aryl ring supported bridging B–C–B three-centre–two-electron (3c–2e) bond has been reported. Pyrido[1,2-a]isoindole was found to undergo a stepwise BH3 addition reaction, during which a mono-BH3 adduct was formed from a electrophilic addition at the Cγ in pyrido[1,2-a]isoindole. A molecule of hydrogen was eliminated throughout the second step of addition reaction. DFT calculations indicate
已经报道了一种新型且空气稳定的有机(氢)乙硼烷,其特征是五元芳环支撑桥接 B-C-B 三中心-双电子 (3c-2e) 键。发现吡啶并[1,2- a ]异吲哚经历了逐步的BH 3加成反应,在此期间,单-BH 3加合物由在吡啶并[1,2- a ]异吲哚中的C γ处的亲电加成形成。在加成反应的第二步中,一分子氢被消除。DFT 计算表明 H 2演化与第二次 BH 3添加一致,而不是在第二次 BH 3攻击之前形成 B C。
Synthesis and Properties of Highly Fluorescent Indolizino[3,4,5-<i>ab</i>]isoindoles
作者:Teruyuki Mitsumori、Michael Bendikov、Olivier Dautel、Fred Wudl、Takeshi Shioya、Hideki Sato、Yoshiharu Sato
DOI:10.1021/ja049214x
日期:2004.12.1
We report here the synthesis, X-ray structures, optical and electrochemical properties, fabrication of light-emitting devices, and density functional calculations for indolizino[3,4,5-ab]isoindole (INI) derivatives. Strongly luminescent heterocycles based on the INI unit were synthesized by 1,3-dipolar cycloaddition reactions between pyrido[2,1-a]isoindole (PIS) and acetylene or ethylene derivatives
我们在此报告了吲哚嗪 [3,4,5-ab] 异吲哚 (INI) 衍生物的合成、X 射线结构、光学和电化学特性、发光器件的制造和密度泛函计算。基于 INI 单元的强发光杂环是通过吡啶并 [2,1-a] 异吲哚 (PIS) 和乙炔或乙烯衍生物之间的 1,3-偶极环加成反应合成的。它们是吲哚并[3,4,5-ab]异吲哚2-9和14-15,苯并[1',2'-1,2]吲哚并[3,4,5-ab]异吲哚10,哒嗪[4' ,5':1,2]indolizino[3,4,5-ab]isoindoles 12-13, and 2,3-hydropyridazino[4',5':1,2]indolizino[3,4,5-ab] isoindole-1,4-dione 11.相对发光量子产率可高达90%。它们的还原和氧化电位以及高发光度可以使这些杂环成为三(8-羟基喹啉)铝(Alq(3))的替代品。发光器件的亮度高达
Method for the synthesis of 3-substituted indolizine and benzoindolizine compounds
申请人:Hayford Anthony
公开号:US20060160770A1
公开(公告)日:2006-07-20
A method of making a compound of Formula I:
comprises reacting a compound of Formula II
with a compound such as R
1
OH or R
1
SH, to produce said compound of Formula I. Compounds of Formula I are useful, among other things, as dyes, spectral sensitizers, glycosidase inhibitors, and as antibacterial, antiviral, and anti-inflammatory agents.
Lightening Agents and/or Dyes that Contain Aldehyde(s)
申请人:Höffkes Horst
公开号:US20100278767A1
公开(公告)日:2010-11-04
Agents for dyeing and/or lightening keratin fibers, in particular human hair, containing, relative to the weight thereof, 0.001 to 15 wt. % of at least one aldehyde of the formula (I):
wherein X represents —CH(R
2
)—SO
2
—Y—R
1
, —CR
3
R
4
R
5
, or
wherein Y represents —CH(CHO)— or —CH
2
— or a chemical bond, and
wherein each of R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, R
9
, and R
10
independently represents —H or —CN or —F or —Cl or —Br or —I or —CHO or —NH
2
or —NO
2
or —CF
3
or —CCl
3
or —CF
2
CF
3
or —CCl
2
CCl
3
or an optionally substituted (C
1
-C
6
) alkyl group or a hydroxyalkyl group or a polyhydroxyalkyl group or an optionally substituted (C
1
-C
6
) alkylene group, and wherein the agent contains no oxidation dye precursors of developer and coupler type.
Reversible 1,1-Hydroboration: Boryl Insertion into a CN Bond and Competitive Elimination of HBR<sub>2</sub>or RH
作者:Deng-Tao Yang、Soren K. Mellerup、Xiang Wang、Jia-Sheng Lu、Suning Wang
DOI:10.1002/anie.201500487
日期:2015.4.27
reaction with pyrido[1,2‐a]isoindole (A), resulting in insertion of a BR2 unit into a CNbond and the formation of a variety of BN heterocycles. Investigation on the thermal reactivity of the BN heterocycles revealed that these molecules have two distinct and competitive thermal elimination pathways: HBR2 elimination (or retro‐hydroboration) versus RH elimination, depending on the R group on the B atom