Process for the preparation of substituted dibenzoylmethane compounds
申请人:BASF Aktiengesellschaft
公开号:US06278025B1
公开(公告)日:2001-08-21
The invention relates to a process for the preparation of substituted dibenzoylmethane compounds of the formula I,
which comprises
a1) condensing benzaldehydes of the formula II with acetophenones of the formula III to give the chalkones of the formula IV
or
a2) condensing benzaldehydes of the formula V with acetophenones of the formula VI to give the chalkones of the formula VII
b) converting the chalcones of the formulae IV and VII into the dibenzoylmethane compounds of the formula I, the substituents R1 and R2 being defined as in the description.
LIGHT EMITTING DEVICE MATERIAL AND LIGHT EMITTING DEVICE
申请人:Nagao Kazumasa
公开号:US20100264406A1
公开(公告)日:2010-10-21
A light emitting device material containing a pyrromethene compound represented by the general formula (1). It realized a luminescent element having a high luminescent efficiency and excellent color purity. Also provided is a luminescent element employing the materials.
USE OF PROPANOL AND PROPENOL DERIVATIVES AS ANTIOXIDANTS
申请人:MERCK PATENT GmbH
公开号:US20150051295A1
公开(公告)日:2015-02-19
The invention relates to the use of propanol and propenol derivatives as antioxidants, to compositions comprising propanol and propenol derivatives and the preparation thereof, and to certain propanol and propenol derivatives and the preparation thereof.
Verfahren zur Herstellung von substituierten Dibenzoylmethanverbindungen
申请人:BASF AKTIENGESELLSCHAFT
公开号:EP0994092A1
公开(公告)日:2000-04-19
Die Erfindung betrifft ein Verfahren zur Herstellung von substituierten Dibenzoylmethanverbindungen der allgemeinen Formel I,
dadurch gekennzeichnet, daß man
a1) Benzaldehyde der allgemeinen Formel II mit Acetophenonen der allgemeinen Formel III zu den Chalkonen der allgemeinen Formel IV kondensiert
oder
a2) Benzaldehyde der allgemeinen Formel V mit Acetophenonen der allgemeinen Formel VI zu den Chalkonen der allgemeinen Formel VII kondensiert und
b) die Chalkone der Formeln IV und VII in die Dibenzoylmethanverbindungen der allgemeinen Formel I überführt, wobei die Substituenten R1 und R2 die in der Beschreibung genannten Bedeutungen haben.
本发明涉及一种通式 I 的取代二苯甲酰甲烷化合物的制备工艺、
其特征在于
a1) 通式 II 的苯甲醛与通式 III 的苯乙酮缩合,得到通式 IV 的查耳酮
或
a2) 通式 V 的苯甲醛与通式 VI 的苯乙酮缩合,得到通式 VII 的查耳酮,以及
b) 将通式 IV 和 VII 的查耳酮转化为通式 I 的二苯甲酰基甲烷化合物,其中取代基 R1 和 R2 的含义见说明。
LUMINESCENT-ELEMENT MATERIAL AND LUMINESCENT ELEMENT
申请人:Toray Industries, Inc.
公开号:EP2208772A1
公开(公告)日:2010-07-21
A light emitting device material containing a pyrromethene compound represented by the general formula(1).It realized a luminescent element having a high luminescent efficiency and exellent color purity.Also provided is a luminescent element employing the materials.