Indium(III) Halides as New and Highly Efficient Catalysts for <i>N</i>-<i>tert</i>-Butoxycarbonylation of Amines
作者:Asit Chakraborti、Sunay Chankeshwara
DOI:10.1055/s-2006-942492
日期:2006.8
Indium(III) bromide and chloride efficiently catalysed the N-tert-butoxycarbonylation of amines with (Boc)2O at room temperature and under solvent-free conditions. Various aromatic, heteroaromatic and aliphatic amines were converted to N-tert-butylcarbamates in excellent yields in short times. Chiral amines, esters of α-amino acids and β-amino alcohols afforded optically pure N-t-Boc derivatives in high yields. The reactions were chemoselective and no competitive side reactions such as isocyanate, urea, and N,N-di-t-Boc formation were observed. Chemoselective conversion to N-tert-butylcarbamates took place with amino alcohols without any formation of oxazolidinones.
There is provided an electroactive system for forming an electroactive layer. The system includes: (a) a first electroactive material; (b) a facilitation additive; and (c) a first liquid medium. The facilitation additive is present during baking in an amount sufficient to enable the electroactive layer made therefrom to effectively resist mixing with a second liquid medium applied thereover after the electroactive system is deposited and baked at a temperature less than 350° C. for a predetermined time.
[EN] HIGHLY SENSITIVE DETECTION OF BIOMOLECULES USING PROXIMITY INDUCED BIOORTHOGONAL REACTIONS<br/>[FR] DÉTECTION HAUTEMENT SENSIBLE DE BIOMOLÉCULES PAR DES RÉACTIONS BIOORTHOGONALES INDUITES PAR LA PROXIMITÉ
申请人:UNIV CALIFORNIA
公开号:WO2016109733A1
公开(公告)日:2016-07-07
There provided, inter alia, reagents and methods for modulation fluorescence of a tetrazine containing compound and/or a dienophile-containing compound. There is provided a method of detecting binding of a first affinity ligand and a second affinity ligand, the method includes the follow steps. Contacting a tetrazine-containing compound with a dienophile-containing compound, the tetrazine-containing compound comprising a first affinity ligand covalently attached to a tetrazine moiety and the dienophile-containing comprising a second affinity ligand covalently attached to a dienophile moiety.
There is disclosed a compound having Formula I or Formula I': In Formula I and Formula I': Ar1 and Ar2 are the same or different and are aryl groups; R1 through R5 are independently the same or different at each occurrence and are D, F, alkyl groups, aryl groups, alkoxy groups, silyl groups, or crosslinkable groups; R6 is H, D, or halogen; a through e are independently an integer from 0 to 4; f is 1 or 2; g is 0, 1 or 2; h is 1 or 2; and n is an integer greater than 0.
[EN] SOLVENT-RESISTANT HOLE TRANSPORT LAYERS<br/>[FR] COUCHES DE TRANSPORT DE TROUS RÉSISTANTES AUX SOLVANTS
申请人:DU PONT
公开号:WO2015089027A1
公开(公告)日:2015-06-18
There is provided a hole transport material having Formula I, Formula Ia, or Formula II: In the formulae: A is an aromatic moiety including at least one triarylamino group; B' is an aromatic moiety; E is an end group which is H, D, alkyl, aryl, halide, deuterated alkyl, or deuterated aryl; G is G1, G2, or a deuterated analog thereof where the asterisk represents the point of attachment; n is an integer greater than 0; and m1 and m2 represent non-zero mole fractions, such that m1 + m2 = 1.