[EN] ROBUST PHOTOCHROMIC COMPOUNDS WITH SILICON- OR PHOSPHORUS-CONTAINING HETEROCYCLIC RING AND PRODUCTION THEREOF<br/>[FR] COMPOSÉS PHOTOCHROMIQUES ROBUSTES COMPORTANT UN CYCLE HÉTÉROCYCLIQUE CONTENANT DU PHOSPHORE OU DU SILICIUM ET LEURS PROCÉDÉS DE PRODUCTION
申请人:UNIV HONG KONG
公开号:WO2015188790A1
公开(公告)日:2015-12-17
In one embodiment, provided are a new class of diarylethene-containing photochromic compounds with the incorporation of silicon-or phosphorus-containing heterocycles into the "ethene" part of the diarylethene backbone that has been shown to be capable of displaying tunable, robust and thermally stable photochromic properties. Also provided are methods for synthesizing these compounds, as well as uses of these compounds as these compounds may be used as the photochromic layer in an optical recording material and other optical functioning devices.
atom-economical synthetic method for the generation of fused indoles, using a gold-catalyzedcascadecyclization of diynes, has been developed. The reaction gave various fused indoles, such as aryl-annulated[a]carbazoles, dihydrobenzo[g]indoles, and azepino- or oxepinoindole derivatives in good to excellent yields, through an intramolecular cascade 5-endo-dig hydroamination followed by a 6- or 7-endo-dig cycloisomerization
已经开发了一种直接,简洁且原子经济的合成方法,该方法使用金催化的二炔级联环化生成稠合的吲哚。该反应通过分子内级联5-内-挖-加氢胺化,然后进行6-氨基苯甲酸酯化,得到了各种稠合的吲哚,例如芳基环化的[ α ]咔唑,二氢苯并[ g ]吲哚和氮杂环庚烷-或氧代庚并吲哚衍生物,收率良好。或7-内挖式环异构化,而不会产生理论副产物。所得的三支吲哚对T表现出有效的抗真菌活性。癣菌和Ť。风疹,说明了所描述的级联反应在药物发现中的实际应用。
Gold(I)-Catalyzed Regioselective Inter-/Intramolecular Addition Cascade of Di- and Triynes for Direct Construction of Substituted Naphthalenes
intermolecular addition–intramolecular carbocyclization reaction of dialkynylbenzenes was developed. In this reaction, regioselective addition of an external nucleophile toward the terminal alkyne and subsequent 6-endo-dig cyclization proceeded to give the 1,3-disubstituted naphthalenes in good yields. The direct synthesis of disubstituted chrysenesvia a gold-catalyzed addition and double cyclization cascade
Synthesis of Highly Substituted Benzofuran-containing Natural Products via Rh-catalyzed Carbonylative Benzannulation
作者:Ji-tian Liu、Christopher J. Simmons、Haibo Xie、Fan Yang、Xian-liang Zhao、Yu Tang、Weiping Tang
DOI:10.1002/adsc.201600992
日期:2017.2.20
carbonylative benzannulation for the synthesis of indoles, benzofurans, and many related heterocycles. In this update, we demonstrated the utility of this method for the synthesis of several highly substituted benzofuran‐containing natural products. The scope and limitation of the Rh‐catalyzed carbonylative benzannulation was investigated in the context of natural product synthesis for the first time. This study
Gold-Catalyzed Formal Cyclisation/Dimerization of Thiophene-Tethered Diynes
作者:Svetlana Tšupova、Max M. Hansmann、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/chem.201700061
日期:2017.4.27
A new pathway in dual gold‐catalyzed reaction of thiophene‐tethered diynes has been identified. A series of fully conjugated alkynyl‐substituted benzothiophenes and benzofurans was obtained by a formal cyclisation/dimerization sequence. All the products are fluorescent, owing to their extended conjugation. The mechanistic studies have been carried out, suggesting that gold acetylides take part in this