Aluminium complexes and use thereof as a catalyst in intramolecular ring closure reactions
Номер патента: EP2376412A1
Опубликовано: 19-10-2011
Автор(ы): Hisanori Ito, Yoji Hori
Принадлежит: Takasago International Corp, Takasago Perfumery Industry Co
Опубликовано: 19-10-2011
Автор(ы): Hisanori Ito, Yoji Hori
Принадлежит: Takasago International Corp, Takasago Perfumery Industry Co
Реферат: To provide a process for increasing the proportion of an optical isomer of not only a compound having a closed ring but also a compound not having a closed ring when an optical isomer mixture of a compound having both a formyl group and a double bond capable of causing a carbonyl-ene ring closing reaction in the same molecule is subjected to a ring closing reaction. A process for increasing the proportion of an optical isomer characterized by subjecting an optical isomer mixture of a compound having both a formyl group and a double bond capable of causing a carbonyl-ene ring closing reaction in the same molecule to a ring closing reaction in the presence of a predetermined aluminum complex represented by the general formula: [Al l (L 1 ) l (L 2 ) m (Lh) n ] k .
Technetium- and rhenium-bis(heteroaryl) complexes and methods of use thereof
Номер патента: CA2745918C. Автор: Genliang Lu,John W. Babich,Craig Zimmerman,Kevin P. Maresca,Jian-cheng Wang,John Joyal,Shawn Hillier,John Marquis. Владелец: Molecular Insight Pharmaceuticals Inc. Дата публикации: 2017-10-10.