4806-14-8Relevant academic research and scientific papers
Trithiocarbonate Anion as a Sulfur Source for the Synthesis of 2,5-Disubstituted Thiophenes and 2-Substituted Benzo[ b]thiophenes
Paix?o, Douglas B.,Rampon, Daniel S.,Salles, Helena D.,Soares, Eduardo G. O.,Bilheri, Filipe N.,Schneider, Paulo H.
, p. 12922 - 12934 (2020/11/26)
The trithiocarbonate anion (CS32-) was generated in situ from CS2 and KOH in dimethyl sulfoxide by a simple method and used as a novel synthetic equivalent of the S2- synthon for the synthesis of 2,5-disubstituted thiophenes from 1,3-butadiynes. Additionally, this system was employed for the metal-free synthesis of 2-substituted benzo[b]thiophenes from 2-haloalkynyl (hetero)arenes. These compounds were obtained from a cheap and readily available sulfur source in moderate to good yields, with good functional group tolerance.
Substituted phthalocyanines
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, (2008/06/13)
Phthalocyanine of formula (I), wherein M is a metal or is 2H, bonded at 29 and 31 positions shown, R1 to R8 are the same or different and are independently selected from C1 to C20 alkyl, C1 -C20 alkenyl, --X--COO--X1, --X--O--Y, a, and --X--COZ where X is independently selected from a chemical bond, (CH2)n where n-0-20 or (CH2)a CH--CH (CH2)b where a and b are independently selected from 0-20 and a+b is in the range 0-20, X1 is independently selected from C1 -C20 alkyl or C2 -C20 alkenyl, Y is independently selected from C1 -C20 alkyl, C2 -C20 alkenyl or H and Z is selected from OH or NR1 R11 are independently selected from H, C1 -C20 alkyl and C2 -C20 alkenyl. These phthalocyanines may exhibit discotic liquid crystal phases, absorb infra-red radiation and make good Langmuir-Blodgett films.
Synthesis and Characterisation of some 1,4,8,11,15,18,22,25-Octa-alkyl- and 1,4,8,11,15,18-Hexa-alkyl-22,25-bis(carboxypropyl)phthalocyanines
McKeown, Neil B.,Chambrier, Isabelle,Cook, Michael J.
, p. 1169 - 1177 (2007/10/02)
A series of 3,6-dialkylphthalonitriles and 3,6-bis(4,4,4-trimethoxybutyl)phthalonitrile have been prepared via Diels-Alder reactions of 2,5-disubstituted furans or thiophene 1,1-dioxides with fumaronitrile.The phthalonitriles were converted into the title phthalocyanines as metal-free and copper(II) derivatives.The macrocycles were characterised using 1H NMR and optical spectroscopy, and fastatom bombardment spectrometry.Certain examples exhibit discotic liquid crystal behaviour.
