122346-63-8Relevant articles and documents
Efficient and recyclable phthalocyanine-based sensitizers for photooxygenation reactions
Xu, Hu,Chan, Wing-Kin,Ng, Dennis K. P.
, p. 1791 - 1796 (2009)
Treatment of 4,5-bis(4-methoxycarbonylphenoxy) phthalonitrile with Zn(OAc)2·2H2O and 1,8-diazabicyclo[5.4.0]undec-7- ene in octan-1-ol or dodecan-1-ol led to base-promoted cyclotetramerization. Under these conditions, transesterification also occurred to give the corresponding zinc(II) octakis(4-alkoxycarbonylphenoxyphthalocyanines. These two macrocycles, together with another two pegylated silicon(IV) phthalocyanines, were found to be highly efficient sensitizers for the photooxygenation of a series of alkenes and 1-naphthol. In general, the zinc(II) analogues exhibit a higher photostability and can be recycled at least four times without a significant loss of activity. Georg Thieme Verlag Stuttgart.
Photooxygenations in a bubble column reactor
Yavorskyy, Alexander,Shvydkiv, Oksana,Limburg, Carolin,Nolan, Kieran,Delaure, Yan M. C.,Oelgemoeller, Michael
experimental part, p. 888 - 892 (2012/06/18)
A novel column reactor was constructed and successfully applied to dye-sensitized photooxygenation reactions in aqueous alcohol solutions. The air flow pattern within the narrow glass column could be controlled via the size of the air inlet capillary. Using a 500 μm capillary, a slug flow pattern was realized which allowed for superior mass transfer and light transparency within a thin solvent layer. These features subsequently gave higher conversion rates and isolated yields.
Electron transfer-induced dehydrogenation reactions within methyl viologen-supported zeolite Na-Y under non-irradiative conditions
Stratakis, Manolis,Stavroulakis, Manolis
, p. 6409 - 6411 (2007/10/03)
Methyl viologen-supported zeolite Na-Y is a unique and very efficient medium for carrying out electron transfer-induced reactions in the absence of an irradiation source (spontaneously). Several monoterpenes loaded within the supported zeolite are dehydrogenated to p-cymene. The reaction occurs even in the open air with formation of minor amounts of ascaridole depending on the substrate. It is proposed that the radical cations of the monoterpenes are formed by single electron transfer to Na-Y, with methyl viologen acting as a promoter.