Highly Selective Hydrogenation of Aromatic Ketones and Phenols Enabled by Cyclic (Amino)(alkyl)carbene Rhodium Complexes
作者:Yu Wei、Bin Rao、Xuefeng Cong、Xiaoming Zeng
DOI:10.1021/jacs.5b05868
日期:2015.7.29
complexes ligated by strongly σ-donating cyclic (amino)(alkyl)carbenes (CAACs) show unique catalytic activity for the selective hydrogenation of aromatic ketones and phenols by reducing the aryl groups. The use of CAAC ligands is essential for achieving high selectivity and conversion. This method is characterized by its good compatibility with unsaturated ketones, esters, carboxylic acids, amides, and
Under blue-light irradiation conditions with a photocatalyst [1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene], silyl enol ethers reacted with alkenes in the presence of a smallamount of water to afford the α-alkylation products in good to high yields. A thiol cocatalyst was found to expand the substrate scope of the reaction.
RADIATION-SENSITIVE COMPOSITION OF CHEMICAL AMPLIFICATION TYPE
申请人:Clariant International Ltd.
公开号:EP1033624A1
公开(公告)日:2000-09-06
A chemically amplified radiation sensitive composition is provided which comprises a film forming hydroxystyrene based resin in combination with an onium salt precursor which generates a fluorinated alkanesulfonic acid as a photoacid generator. This composition can realize neither corrosion of apparatuses by outgas, nor T-shaped pattern profiles, nor change in linewidth attributable to process time delay, on the other side, high sensitivity and resolution, and good pattern profiles and stability thereof.
本发明提供了一种化学放大辐射敏感组合物,该组合物由成膜的羟基苯乙烯基树脂与鎓盐前体结合而成,鎓盐前体生成氟化烷磺酸作为光酸发生器。这种组合物既不会因放出气体而腐蚀设备,也不会产生 T 型图案轮廓,也不会因加工时间延迟而改变线宽,同时还具有高灵敏度和高分辨率,以及良好的图案轮廓和稳定性。
Cornubert et al., Bulletin de la Societe Chimique de France, 1955, p. 400,405
作者:Cornubert et al.
DOI:——
日期:——
Asymmetric synthesis of two-residue modules designed for mimicry of beta strands
作者:John C. Roberts、Peter V. Pallai、Julius Rebek
DOI:10.1016/0040-4039(94)02354-e
日期:1995.1
A novel design and asymmetric synthesis of two-residue mimics is presented as