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Phenyl thiocyanate and phenyl isothiocyanate are isomers. Organic thiocyanates are organic compounds containing the functional group RSCN. the organic group is attached to sulfur: R−S−C≡N has a S–C single bond and a C≡N triple bond. [1] Organic thiocyanates are valued building blocks.
Allyl thiocyanate isomerizes to the isothiocyanate: [4] CH 2 =CHCH 2 SCN → CH 2 =CHCH 2 NCS. Isothiocyanates can be prepared by treating organic dithiocarbamate salts with lead nitrate or tosyl chloride. [5] [6] Synthesis of phenyl isothiocyanate. Isothiocyanates may also be accessed by the fragmentation reactions of 1,4,2-oxathiazoles. [7]
Lesser amounts of other hydrated compounds also form: e.g. Fe(SCN) 3 and [Fe(SCN) 4] −. [19] Similarly, Co 2+ gives a blue complex with thiocyanate. [20] Both the iron and cobalt complexes can be extracted into organic solvents like diethyl ether or amyl alcohol. This allows the determination of these ions even in strongly coloured solutions.
This list may not reflect recent changes. Organic thiocyanates; Thiocyanate; Transition metal complexes of thiocyanate; A. Ammonium thiocyanate; B. Barium thiocyanate; C.
Methyl thiocyanate is an organic compound with the formula CH 3 SCN. The simplest member of the organic thiocyanates, it is a colourless liquid with an onion-like odor. It is produced by the methylation of thiocyanate salts. The compound is a precursor to the more useful isomer methyl isothiocyanate (CH 3 NCS). [4]
The following is a list of straight-chain alkanes, the total number of isomers of each (including branched chains), and their common names, sorted by number of carbon atoms. [ 1 ] [ 2 ] Number of C atoms
TMSNCS is useful reagent in organic chemistry. It is an ambident nucleophile, able to react with various alkyl halides, acetals, aldehydes, unsaturated compounds, aziridines, oxiranes, polycyclic aromatic hydrocarbons, and acetylated hexoses to form either thiocyanate or isothiocyanate structures. [6]
Allyl isothiocyanate is produced commercially by the reaction of allyl chloride and potassium thiocyanate: [4] CH 2 =CHCH 2 Cl + KSCN → CH 2 =CHCH 2 NCS + KCl. The product obtained in this fashion is sometimes known as synthetic mustard oil. Allyl thiocyanate isomerizes to the isothiocyanate: [8] CH 2 =CHCH 2 SCN → CH 2 =CHCH 2 NCS