The cyclopentadienyl (Cp) group is a very important ligand for many transition‐metal complexes which have been applied in catalysis. The availability of chiralcyclopentadienyl ligands (Cpx) lags behind other ligand classes, thus hampering the investigation of enantioselective processes. We report a library of chiral CpxIrIII complexes equipped with an atropchiral Cp scaffold. A robust complexation
环戊二烯基(Cp)基团是许多在催化中应用的过渡金属配合物的重要配体。手性环戊二烯基配体(Cp x)的可用性落后于其他配体类别,因此妨碍了对映选择性过程的研究。我们报告了配备手性Cp支架的手性Cp x Ir III复合物的库。强大的络合程序可为Cp x Ir III络合物可靠地提供可调节的抗衡离子。在概念验证的应用中,含碘化物对烯炔的环异构化反应具有很高的选择性。脱氢哌啶稠合的环丙烷产物以良好的产率和对映选择性形成。
Palladium(II)/Polyoxometalate-Catalyzed Direct Alkenylation of Benzofurans under Atmospheric Dioxygen
作者:Qiufeng Huang、Shaojia Ke、Lin Qiu、Xiaofeng Zhang、Shen Lin
DOI:10.1002/cctc.201400091
日期:2014.6
An efficient and selective C2 alkenylation of benzofurans was performed by using Pd(OAc)2 combined with a catalytic amount of 11‐molybdovanadophosphoric acid (H4PMo11VO40) under an atmosphere of dioxygen. N‐Acetylglycine (Ac‐Gly‐OH) was observed to be an effective additive for the olefination reaction.
使用Pd(OAc)2和催化量的11-钼钒钒磷酸(H 4 PMo 11 VO 40),在双氧气氛下,对苯并呋喃进行了有效且选择性的C2烯基化反应。观察到N-乙酰甘氨酸(Ac-Gly-OH)是有效的烯化反应添加剂。
Benzo[c]carbazole derivatives produced by an effective Diels–Alder reaction: synthesis and structure–activity-relationship for surface coating
We show the construction of a library of heteroatom-fused benzo[c]carbazole derivatives by a Diels–Alderreaction as effective surface-coating materials against copper corrosion in an acidic medium.
我们展示了通过Diels-Alder反应构建杂原子稠合的苯并[ c ]咔唑衍生物库的方法,该库可有效抵抗酸性介质中的铜腐蚀。
Maillard; Langlois; Vo Van, European Journal of Medicinal Chemistry, 1983, vol. 18, # 4, p. 353 - 358
作者:Maillard、Langlois、Vo Van、et al.
DOI:——
日期:——
3-Benzo[b]furyl- and 3-benzo[b]thienylaminobutyric acids as GABAB ligands. Synthesis and structure-activity relationship studies
Baclofen (beta-p-chlorophenyl GABA) is one of the selective agonists for the bicuculline-insensitive GABA(B) receptors. In the search for new compounds that bind to GABA(B) receptors it is very important to clarify the structural requirements. We report the syntheses of and binding studies on various S-heteroaromatic (benzo[b]furan and benzo[b]thiophen)aminobutyric acids. The 4-amino-3-(7-methyl-benzo[b]furan-2-yl)butanoic acid 8g is a potent and specific ligand for GABA(B) receptors, with an IC50 value of 5.4 mu M in the displacement of [H-3]GABA.