1-Pyreneacetic acid

Pyreneacetic acid (FW 260.3), pre-dried to constant weight in vacuo, (100-200 mg)... 

Weigh out the 1-pyreneacetic acid accurately, using an analytical balance, and transfer to the round-bottomed flask. Add the THF and stir the mixture until a homogeneous solution is obtained. 

The molarity of the butyl-lithium can now be calculated from a consideration of the number of moles of 1-pyreneacetic acid utilized and the volume of BuLi required to obtain a permanent end-point (molarity (M) = mols/vol). 

Scheme 10 Reaction of 1-pyreneacetic acid with butyllithium to form a coloured dianion.

Preparation. Dry all glassware in an electric oven set at 125°C for 24 h prior to reaction. Distil a suitable quantity (>50 ml) of THF into a dry receiver flask fitted with a septum, distil styrene from calcium hydride under reduced pressure into a dry receiver flask fitted with a septum. Butyllithium is titrated with 1-pyreneacetic acid, to obtain an approximate value for its activity. ... 

SWCNTs were modified with several water-soluble pyrene derivatives (1-pyreneacetic acid, 1-pyrenecarboxylic acid, 1-pyrenebutyric acid, and 8-hydroxy-l,3,6-pyrenetrisulfonic acid) bearing negatively charged ionic head-groups, to act as anchors to several pyridium headgroups present in a series of water-soluble metalloporphyrins [MP] + (M = Zn, Co, and Fe) [60a]. Interactions between the metalloporphyrins and SWCNTs proceeded through a combination of associative van der Waals (spacer-CNT) and electrostatic interactions (metalloporphyrins-spacer-CNT), as demonstrated by the combination of spectroscopic and surface techniques. 

Lu et also applied the same non-covalent functionalization approach to the purification of SWNTs. A water-soluble pyrene derivative 1-pyreneacetic acid was used to solubilize the purified (typical nitric acid treatment) SWNTs in aqueous solution, allowing a nearly complete removal of residual metal catalysts and carbonaceous impurities. According to thermogravimetric analysis (TGA) results, the purified sample of SWNTs contained little other carbonaceous impurities and no more than 3% of residual catalysts by weight... 

DomP, Figure and negative for another (1-pyreneacetic acid). Such... 

H. Klljunen and T.A. Base, J. Org. Cbem., 1991, 56, 6950. Titration of RMgX with 1-pyreneacetic acid. 

Pyreneacetic acid, P-00304 1-Pyrenebutanoic acid hydrazide, P-00305 1 -Pyrenecarboxaldehyde, P-00306 1-Pyrenecarboxylic acid, P-00307 3-Pyrenecarboxylic acid (obsol.), see P-00307 1-Pyrenedodecanoic acid, P-00308... 

Biphenylol Benzoyl, in B-00211 1-Pyreneacetic acid Me ester, in P-00304 1-Pyrenecarboxylic acid El ester, in P-00307... 

V-Phenyl-1 -naphthylamine, P-00151 Phloxin Di-K salt, in P-00212 Picriminazosulfoxine, P-00234 1-Pyreneacetic acid, P-00304... 

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