Hypervalent iodine(III) catalyzed radical hydroacylation of chiral alkylidenemalonates with aliphatic aldehydes under photolysis
作者:Sermadurai Selvakumar、Qi-Kai Kang、Natarajan Arumugam、Abdulrahman I. Almansour、Raju Suresh Kumar、Keiji Maruoka
DOI:10.1016/j.tet.2017.08.018
日期:2017.10
bearing (−)-8-phenylmenthol as a chiral auxiliary with aliphaticaldehydes is realized under photolysis. This work represent the first example of diastereoselective addition of acyl radicals to olefins to afford chiral ketones in a highly stereoselective fashion. The reaction is initiated by the photolysis of hypervalent iodine(III) catalyst under mild and metal-free conditions. The synthetic potential
Diastereoselective radical hydroacylation of chiral alkylidenemalonates with aliphatic aldehydes is realized by the combination of a hypervalentiodine(III) reagent and UV‐light irradiation. The reaction is initiated by the photolysis of hypervalentiodine(III) reagents under mild, metal‐free conditions, and is the first example of diastereoselective addition of acyl radicals to olefins to afford chiral
Neue 2-(2'-Hydroxyphenyl)benzotriazole und 2-Hydroxybenzophenone als Lichtschutzmittel für polymeres Material
申请人:Clariant GmbH
公开号:EP0897916A2
公开(公告)日:1999-02-24
Die vorliegende Erfindung bezieht sich auf neue Stabilisatoren der allgemeinen Formel (I)
worin die Substituenten die in der Beschreibung definierte Bedeutung haben.
Die neuen Verbindungen sind ausgezeichnete Stabilisatoren für polymeres Material gegen den Einfluß von Licht und Wärme.