1.
High temperatures « Org Prep Daily
It should be far more heat resistant than the NaNO2-based mixtures and thus it should be applicable even for very high temperatures (>300C). ...
2.
When the red water comes out « Org Prep Daily
When the red water comes out ... These slug-like creeps wait patiently in trees, bushes and tall plants. They can feel you coming from some ...
3.
Evans asymmetric glyoxylate ene reaction « Org Prep Daily
50% ethyl glyoxylate oligomer in toluene (Fluka, 88.6g) was distilled at atmospheric pressure using a short (2in) Vigreaux column and oil ...
4.
Setting up a vacuum manifold « Org Prep Daily
Dual-bank manifold (5-fold) with bore glass stopcocks from Chemglass (their new version of it) and the same kind of manifold from Aldrich ...
5.
On Using Glass TLC plates « Org Prep Daily
We buy Merck silica TLC glass plates (250um, with UV indicator), .... one thing i love about aromatic chemistry: no TLC plate staining ...
6.
2006 September « Org Prep Daily
Sep 14, 2006 ... The density of pure Et-glyoxylate is 1.051g/mL at 23C. 1H-NMR(CDCl3): 9.31(s, 1H), 4.23(q, 7Hz, 2H), 1.31(t, 7Hz, 3H) ...
7.
2006 September « Org Prep Daily
Sep 14, 2006 ... The density of pure Et-glyoxylate is 1.051g/mL at 23C. 1H-NMR(CDCl3): 9.31(s, 1H), 4.23(q, 7Hz, 2H), 1.31(t, 7Hz, 3H) ...
8.
1-(3′-carboxyphenyl)-pyrazole-4-carboxaldehyde « Org Prep Daily
Note: In the absence of conc HCl, the main product is the m-carboxyphenyl hydrazone of the pyrrole aldehyde (= 2:1 condenzation product of arylhydrazine ...
9.
TFFH « Org Prep Daily
Drying the salts is important, so is the filtration under positive pressure (fortunately the intermediate and the TFFH product are coarse heavy solids that ...
10.
Setting up a vacuum manifold « Org Prep Daily
I particularly like direct drive Welsh-made Fisher Maxima M12C pump – it has a great pumping speed (230L/min) and the price is reasonable ...
