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Questions related from Shuer Tan
I have been trying to perdeuterate an organic compound (c.a. 5-bromoacenaphthylene-1,2-dione, CAS: 26254-35-3) that has 5 hydrogens, two carbonyls, and one bromide. I tried the hydrothermal...
30 December 2024 3,769 2 View
I would like to aminoalkylate an aryl compound with aldehyde, and pyridine by Mannich reaction. The HCl was not used as catalyst since it is preferable to obtain a secondary amine product instead...
09 August 2018 6,833 7 View
Is it possible to seperate a mixture of two organic compounds (with and without amino group) using amino- functionalized silica gel column chromatography? Which one will I get after the column?
03 August 2018 7,681 4 View
I am curious about whether the Rf value obtained from the silica-coated TLC can be used as a reference during the purification using basic alumina CC? as the silica gel CC is normally used after...
27 November 2017 658 6 View
HOMO=-e[Eox-onset - X]; LUMO=-e[Ered-onset-X] Did anyone have the list for X values? From several papers, I found that the X values for ferrocence are sometime 3.8, 4.4, 4.3; tetrabutylammonium...
05 November 2017 6,030 1 View
I intend to run an experiment using Sulphur as one of the precursors. However, the resulting product seems to be non-reacted. Some stabilizers might be added into the sulphur powder...
27 March 2017 3,081 3 View
I would like to obtain 5,6-dioctyloxybenzo-1,2,5-thiadiazole from 4,5-dioctyloxybenzene-1,2-diaminium chloride. I need SOCl2, which is unable to purchase in my place. Is there any alternative to...
24 February 2017 8,269 12 View
Based on some literature reviews... For isoindigo, Mostly, alkylation of amine groups are done by using suitable alkyl bromide (R-Br) and potassium carbonate. For Carbazole, involve the usage of...
15 January 2017 1,382 10 View
I would like to convert the nitro group to amino group. Most papers are using Sn/tin powder with the present of ethanol and HCl. There is one paper using SnCl2 instead of Sn in the same...
21 December 2016 1,110 31 View
The procedure: 2,5-dibromonitrobenzene (16.86 g, 60 mmol) and potassium carbonate anhydrous (82.93 g, 600 mmol) were added in 89.89 mL of dry dimethyl sulfoxide (DMSO) under the nitrogen...
24 November 2016 4,390 8 View
Is it possible for me to alkylate my compound with the present of dioxaborolane in my compound? Most papers get their compounds alkylated first (as shown in the attachment). What I intend to do is...
12 November 2016 3,069 5 View
If I have a dithienyl-benzothiadiazole, and I intend to brominate only one out of two thiophene ring of the structure. Did anyone have any idea/pathway how to do it? Can it be done by controlling...
20 August 2016 2,194 4 View
carbazole - electron donor isoindigo - electron acceptor
28 April 2016 9,015 1 View
