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Piperidine is an organic compound with the molecular formula (CH 2) 5 NH. This heterocyclic amine consists of a six-membered ring containing five methylene bridges (–CH 2 –) and one amine bridge (–NH–). It is a colorless liquid with an odor described as objectionable, typical of amines. [6]
The platinichloride B 4 ·H 2 PtCl 6 forms orange-red needles ("B" denotes one mole of the alkaloid base in this and the following formula). Iodine in potassium iodide added to an alcoholic solution of the base in the presence of a little hydrochloric acid gives a characteristic periodide, B 2 ·HI·I 2 , crystallizing in steel-blue needles ...
This difference is partly related to the lower symmetry of the individual pyridine molecule (C 2v vs D 6h for benzene). A trihydrate (pyridine·3H 2 O) is known; it also crystallizes in an orthorhombic system in the space group Pbca, lattice parameters a = 1244 pm, b = 1783 pm, c = 679 pm and eight formula units per unit cell (measured at 223 K).
N-Formylpiperidine is an organic compound with the formula C 6 H 11 NO. It is the amide of formic acid and piperidine. It can be used as a polar aprotic solvent, with better hydrocarbon solubility than other amide solvents such as dimethylformamide (DMF). [1] It has also been used to transfer the formyl group to a Grignard reagent: [2]
20% piperidine in DMF (Fmoc group has an approximate half life of 6 seconds in this solution) [8] 5% piperazine, 1% DBU and 1% formic acid in DMF. This method avoids the use of strictly controlled piperidine. [9] No side product was observed for a peptide with 9 residues synthesized with this method. [10]
The chemical is part of the piperidine family, [1] along with many pharmaceuticals and alkaloids such as piperine, which gives black pepper its spicy taste. Trade names include Bayrepel and Saltidin among others. The compound was developed by the German chemical company Bayer in the 1980s [6] and was given the name Bayrepel.
Chemical space is a concept in cheminformatics referring to the property space spanned by all possible molecules and chemical compounds adhering to a given set of construction principles and boundary conditions. It contains millions of compounds which are readily accessible and available to researchers.
2,6-Dimethylpiperidines are chemical compounds with the formula C 5 H 8 (CH 3) 2 NH. Three stereoisomers exist: the achiral (R,S)-isomer and the chiral (R,R)/(S,S) enantiomeric pair. . Dimethylpiperidines are derivatives of the heterocycle piperidine, wherein two hydrogen atoms are replaced by methyl grou