Biscyclization

نتایج جستجو برای: Biscyclization

تعداد نتایج: 4 فیلتر نتایج به سال:

microwave assisted selective synthesis of four chromanones via biscyclization method in the presence of polyphosphoric acid and crystal structure determination of their dicarboxylic acids

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2004

abbas shockravi robabeh alizadeh hossein aghabozorg leyla hossein mohebbi saeed moradi koochi

microwave irradiation is used in the synthesis of four tricyclic chromanones 11-14. the chromanone 14 and 12 are selectively formed thermally and under microwave in the presence of polyphosphoric acid (ppa) from the same dicarboxylic acid 9, respectively. the crystal structures of the two diacids are also reported. the corresponding ortho and meta isomers of diacids crystallize in the space gro...

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Sequential Michael addition/biscyclization reactions leading to the formation of highly substituted polycyclic substrates: some preliminary studies

Journal: :Arkivoc 2002

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Metal-Free [3 + 2 + 1]/[2 + 2 + 1] Biscyclization: Stereospecific Construction with Concomitant Functionalization of Indolizin-5(1H)-one

Journal: :The Journal of Organic Chemistry 2013

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Microwave Assisted Selective Synthesis of four Chromanones Via Biscyclization Method in the Presence of Polyphosphoric Acid and Crystal Structure Determination of Their Dicarboxylic Acids

Journal: Iranian Journal of Chemistry and Chemical Engineering 2004

Abbas Shockravi, Abolghasem Moghimi, Hossein Aghabozorg Leyla Hossein Mohebbi Robabeh Alizadeh Saeed Moradi Koochi

Microwave irradiation is used in the synthesis of four tricyclic chromanones 11-14. The chromanone 14 and 12 are selectively formed thermally and under microwave in the presence of polyphosphoric acid (PPA) from the same dicarboxylic acid 9, respectively. The crystal structures of the two diacids are also reported. The corresponding ortho and meta isomers of diacids crystallize in the space...

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