Structural and Mechanistic Insights into s-Block Bimetallic Catalysis: Sodium Magnesiate-Catalyzed Guanylation of Amines
作者:Marco De Tullio、Alberto Hernán-Gómez、Zoe Livingstone、William Clegg、Alan R. Kennedy、Ross W. Harrington、Antonio Antiñolo、Antonio Martínez、Fernando Carrillo-Hermosilla、Eva Hevia
DOI:10.1002/chem.201602906
日期:2016.12.5
N′‐diisopropylcarbodiimide with 4‐tert‐butylaniline catalyzed by 1 is first order with respect to [amine], [carbodiimide], and [catalyst], and the reaction shows a large kinetic isotopic effect, which is consistent with an amine‐assisted rate‐determining carbodiimide insertion transition state. Studies to assess the effect of sodium in these transformations denote a secondary role with little involvement
Rare-Earth Metal Tris(trimethylsilylmethyl) Anionic Complexes Bearing One 1-Phenyl-2,3,4,5-tetrapropylcyclopentadienyl Ligand: Synthesis, Structural Characterization, and Application
作者:Ling Xu、Zitao Wang、Wen-Xiong Zhang、Zhenfeng Xi
DOI:10.1021/ic3018369
日期:2012.11.5
structural characterization of half-sandwich rare-earth metal tris(trimethylsilylmethyl) anionic complexes bearing one 1-phenyl-2,3,4,5-tetrapropylcyclopentadienyl ligand are achieved. These soluble anionic compounds show good reactivity in the stoichiometric reaction with dibenzoylmethane (DBM) to give the salt-free half-sandwich complex bearing two chelate DBM ligands. More importantly, they can serve as
Catalytic guanylation of aliphatic, aromatic, heterocyclic primary and secondary amines using nanocrystalline zinc(II) oxide
作者:M. Lakshmi Kantam、S. Priyadarshini、P.J. Amal Joseph、P. Srinivas、A. Vinu、K.J. Klabunde、Yuta Nishina
DOI:10.1016/j.tet.2012.05.044
日期:2012.7
to be a highly efficient heterogeneous catalyst for the guanylation of amines with various carbodiimides to afford N,N′,N″-trisubstituted guanidines in excellent yields. Structurally divergent aliphatic, aromatic, heterocyclic primary and secondaryamines were converted to the corresponding N,N′,N″-trisubstituted guanidines using optimal conditions. The catalyst was easy to handle even under atmospheric
ACTINIC RAY-SENSITIVE OR RADIATION-SENSITIVE RESIN COMPOSITION, AND RESIST FILM AND PATTERN FORMING METHOD USING THE SAME
申请人:HIRANO Shuji
公开号:US20120003590A1
公开(公告)日:2012-01-05
An actinic ray-sensitive or radiation-sensitive resin composition containing a resin having (A) a repeating unit represented by a specific formula (I) and (B) a repeating unit capable of generating an acid upon irradiation with an actinic ray or radiation.
ACTINIC-RAY- OR RADIATION-SENSITIVE RESIN COMPOSITION, ACTINIC-RAY- OR RADIATION-SENSITIVE FILM THEREFROM AND METHOD OF FORMING PATTERN
申请人:FUJIFILM CORPORATION
公开号:US20140227636A1
公开(公告)日:2014-08-14
Provided is an actinic-ray- or radiation-sensitive resin composition including a resin (Aa) containing at least one repeating unit (Aa1) derived from monomers of general formula (aa1-1) below and at least one repeating unit (Aa2) derived from monomers of general formula (aa2-1) below and comprising a resin (Ab) that when acted on by an acid, changes its alkali solubility.