烯烃是用于有机转化的理想且用途广泛的起始材料,也是众所周知的钯催化底物。通常,这些反应会通过β-氢化物消除形成新的烯烃产物。与这种情况相比,我们的实验室参与了烯烃加氢和双官能化反应的开发,其中可以控制 β-氢化物的消除。我们在此报告了不对称钯催化加氢芳基化的发展,该反应可产生高达 75% ee 的二芳基次甲基产物。有趣的是,在一定范围内的配体空间体积与反应的 ee 之间观察到线性自由能关系。
烯烃是用于有机转化的理想且用途广泛的起始材料,也是众所周知的钯催化底物。通常,这些反应会通过β-氢化物消除形成新的烯烃产物。与这种情况相比,我们的实验室参与了烯烃加氢和双官能化反应的开发,其中可以控制 β-氢化物的消除。我们在此报告了不对称钯催化加氢芳基化的发展,该反应可产生高达 75% ee 的二芳基次甲基产物。有趣的是,在一定范围内的配体空间体积与反应的 ee 之间观察到线性自由能关系。
A compound which inhibits human thrombin and which has the general structure ##STR1##
一种抑制人类凝血酶的化合物,其具有一般结构##STR1##
[EN] GAMMA AMINO ACID BUILDING BLOCKS<br/>[FR] ÉLÉMENTS CONSTITUTIFS DE GAMMA-AMINOACIDES
申请人:WISCONSIN ALUMNI RES FOUND
公开号:WO2011047190A1
公开(公告)日:2011-04-21
The invention provides compounds and methods, for example, to carry out organocatalytic Michael additions of aldehydes to cyclically constrained nitroethylene compounds catalyzed by a pro line derivative to provide cyclically constrained α-substituted-γ-nitro-aldehydes. The reaction can be rendered enantioselective when a chiral pyrrolidine catalyst is used, allowing for Michael adducts in nearly optically pure form (e.g., 96 to >99% e.e.). The Michael adducts can bear a single substituent or dual substituents adjacent to the carbonyl. The Michael adducts can be efficiently converted to cyclically constrained protected γ- amino acid residues, which are essential for systematic conformational studies of γ-peptide foldamers. New methods are also provided to prepare other γ-amino acids and peptides. These new building blocks can be used to prepare foldamers, such as α/γ-peptide foldamers, that adopt specific helical conformations in solution and in the solid state.
POLARIZING PLATE PROTECTIVE FILM, POLARIZING PLATE, LIQUID CRYSTAL DISPLAY DEVICE, AND PRODUCTION METHOD OF POLARIZING PLATE PROTECTIVE FILM
申请人:FUJIFILM Corporation
公开号:US20150098046A1
公开(公告)日:2015-04-09
There is provided a polarizing plate protective film having, on a substrate film, a layer formed by curing a curable composition containing, setting a total solid content of the curable composition to 100 mass %, from 50 to 99 mass % of the following (A) and from 1 to 30 mass % of the following (B) based on the total solid content: (A) at least either a compound having a cyclic aliphatic hydrocarbon group and an ethylenically unsaturated double bond or a compound having a fluorene ring and an ethylenically unsaturated double bond; and (B) a compound having, in the molecule, at least one of a benzene ring and a cyclohexane ring, and at least one of a hydroxyl group and a carboxy group and the (B) is defined as herein.