74470-87-4

Upstream product

• 815-24-7 Di-t-butyl ketone 
• 1197-55-3 4-aminophenylacetic acid 
• 7446-09-5 sulfur dioxide 
• 563-80-4 3-methyl-butan-2-one 
• 14685-90-6 4-ethoxycarbonylphenylhydrazine 
• 6570-79-2 2-pentenoic acid, 3,4-dimethyl-, ethyl ester 
• 870-63-3 prenyl bromide 
• 38972-74-6 3,4-dimethylpent-2-en-1-ol 
• 858318-04-4 3-iodo-4-(pyrrolidin-1-ylazo) benzoic acid ethyl ester 
• 62875-84-7 3-iodobenzocaine 
• 64-17-5 ethanol 
• 84100-84-5 2,3,3-trimethyl-5-carboxy-3H-indole 

Relevant academic research and scientific papers

Indolenine – dibenzotetraaza [14] annulene Ni (II) complexes as sensitizers for dye - sensitized solar cells

A new series of macrocyclic Ni (II) complexes having indolenine and dibenzotetraaza [14] annulene (DBTAA) moieties were synthesized and tested for their application as sensitizers in dye - sensitized solar cells (DSSCs). The structures are furnished with anchoring groups of ethyl ester (8a, 8b, and 8c) or carboxylic acid (9c) on the indolenine moiety and hexyloxy (8b) or neopentyloxy (8c, 9c) groups on the DBTAA moiety. The best performance was exhibited by dye 9c, which under constant AM 1.5G solar simulation (100 mW cm?2) using I?/I3 ? electrolyte gave a short-circuit current Jsc = 0.43 mA cm?2, an open-circuit voltage Voc = 0.41 V and a fill factor FF = 0.528, corresponding to an overall conversion efficiency of η = 0.093%. This is the first investigation of macrocyclic DBTAA derivatives as sensitizers for DSSCs applications.

Copper-free arylation of 3,3-disubstituted allylic halides with triazene-softened aryl Grignard reagents

A copper-free allylic arylation reaction between 3,3-disubstituted allylic halides and triazene-softened aryl Grignard reagents has been developed. This protocol presents a direct and efficient way to construct both α- or γ-isomers with high regioselectivity under environmentally benign conditions. Various functional groups can be tolerated in the reaction and the products are of high value for multiple synthetic applications. The α- and γ-isomers can be converted to the corresponding 3H-indole and indole derivatives in multigram scale respectively.

Methods of analyzing a biological sample

Chemically reactive carbocyanine dyes that are intramolecularly crosslinked between the 1-position and 3′-position, their bioconjugates and their uses are described. 1,3′-crosslinked carbocyanines are superior to those of conjugates of spectrally similar 1,1′-crosslinked or non-crosslinked dyes. The invention includes derivative compounds having one or more benzo nitrogens.

Rigidized trimethine cyanine dyes

Disclosed are analogues of trimethine cyanine dyes which are useful for imparting fluorescent properties to target materials by covalent and non-covalent association. The compounds have the following general formula: optionally substituted by groups R2-R9 wherein groups R6, R7, R8 and R9 are attached to the rings containing X and Y or, optionally are attached to atoms of the Za and Zb ring structures and groups R1-R9 are chosen to provide desired solubility, reactivity and spectral properties to the fluorescent compounds; A is selected from O, S and NR11 where R11 is the substituted amino radical: where R' is selected from hydrogen, a C1-4 alkyl and aryl and R'' is selected from C1-18 alkyl, aryl, heteroaryl, an acyl radical having from 2-7 carbon atoms, and a thiocarbamoyl radical; Za and Zb each represent a bond or the atoms necessary to complete one, two fused or three fused aromatic rings each ring having five or six atoms, selected from carbon atoms and, optionally, no more than two oxygen, nitrogen and sulphur atoms.