4-(Dimethoxymethyl)-1,2-dimethylbenzene 、 丙二腈 在
{[(CH3)2NH2]2[BaZn(TDP)(H2O)]·DMF·5H2O}n heated to 280 °C at a rate of 0.5 °C min-1 in a N2 stream for 15 min 作用下,
以
二甲基亚砜 为溶剂,
反应 4.0h,
以95.4%的产率得到2-(3,4-dimethylbenzylidene)malononitrile
参考文献:
名称:
Nanochannel-based {BaZn}–organic framework for catalytic activity on the cycloaddition reaction of epoxides with CO2 and deacetalization-Knoevenagel condensation
PROCESS FOR THE PREPARATION OF TEMSIROLIMUS AND ITS INTERMEDIATES
申请人:Gupta Nitin
公开号:US20110184167A1
公开(公告)日:2011-07-28
Novel intermediates, process for their preparation and their use in the preparation of therapeutically effective antineoplastic agents, in particular Temsirolimus of formula (I).
[EN] DIACETAL DERIVATIVES AND THEIR USE AS CLARIFIER<br/>[FR] DÉRIVÉS DE DIACÉTAL ET LEUR UTILISATION EN TANT QUE CLARIFICATEUR
申请人:CLARIANT INT LTD
公开号:WO2019179773A1
公开(公告)日:2019-09-26
The invention relates to a nucleating agent of formula (I), wherein residues R1 and R2 are independently selected from substituted phenyl groups, wherein the substituents of said substituted phenyl groups are independently from each other selected from the group consisting of (C1-C4)-alkyl-; and wherein R3 is a -C(O)OR4, -C(O)NR4R5, or -C(O)-NR7-NR5R6 residue, wherein R4, R5, R6, and R7 are independently from each other hydrogen or (C1-C4)-alkyl-.
The invention relates to a nucleating agent of formula (I)
wherein residues R1 and R2 are independently selected from substituted phenyl groups, wherein the substituents of said substituted phenyl groups are independently from each other selected from the group consisting of (C1-C4)-alkyl-; and wherein R3 is a -C(O)OR4, -C(O)NR4R5, or -C(O)-NR7-NR5R6 residue, wherein R4, R5, R6, and R7 are independently from each other hydrogen or (C1-C4)-alkyl-.
The invention relates to polymer compositions of improved haze and clarity comprising a nucleating agent of formula (I)
with n = 1 or 2, and wherein residues R1 and R2 are independently selected from unsubstituted or substituted phenyl groups or from unsubstituted or substituted 5- or 6-membered heteroaryl groups, and wherein R3 is a functional group, e.g. a carboxylic acid group, an amide group or a hydrazide group.