FeCl<sub>2</sub>-Catalyzed Decarboxylative Radical Alkylation/Cyclization of Cinnamamides: Access to Dihydroquinolinone and Pyrrolo[1,2-<i>a</i>]indole Analogues
作者:Zhihao Cui、Da-Ming Du
DOI:10.1021/acs.joc.8b00511
日期:2018.5.4
91%) with excellent diastereoselectivity (>20:1 dr) was developed. The inexpensive FeCl2·4H2O works as catalyst, and easily prepared peresters (or peroxides) from aliphatic acids act as alkylating reagents and single electron oxidants. This environmentally friendly reaction proceeds via an FeCl2-catalyzed alkyl radical cascade addition/cyclization fashion.
开发了一种简单且统一的方法,以中等至高收率(高达91%)合成具有非对映选择性(> 20:1 dr)的烷基化二氢喹啉酮和吡咯并[1,2- a ]吲哚衍生物。廉价的FeCl 2 ·4H 2 O用作催化剂,由脂肪酸容易制得的过酸酯(或过氧化物)用作烷基化试剂和单电子氧化剂。该环境友好的反应通过FeCl 2催化的烷基自由基级联加成/环化方式进行。
Pressure and Temperature Dependence of the Decomposition Rate of Aliphatic tert-butyl Peroxyesters
作者:Michael Buback、J. Sandmann
DOI:10.1524/zpch.2000.214.5.583
日期:2000.1.1
The thermal decomposition in solution of
在溶液中的热分解
Fluorine-containing copolymer and composition containing the same
申请人:Daikin Kogyo Co., Ltd.
公开号:EP0121934A1
公开(公告)日:1984-10-17
A fluorine-containing copolymer comprising chlorotrifluoroethylene, 2,2,3,3-tetrafluoropropyl vinyl ether and 0 to 25% by mole of a vinyl ether having a functional group selected from the group consisting of hydroxyl group, glycidyl group and amino group. The fluorine-containing copolymer has a good compatibility with methyl methacrylate polymers and gives, in combination use with methyl methacrylate polymers, products such as coating film, self-supporting film and molded article, which have good stain resistance and transparency.
A fluorine-containing copolymer comprising (a) 20 to 80% by mole of the structural unit of the formula:
wherein X is CI or F, (b) 80 to 20% by mole of the structural unit of the formula:
wherein R1 is an alkylene or alicyclic group, M is an alkali metal or a -NHR2R3R4 group in which R2, R3 and R4 are the same or different and each is H or an alkyl or hydroxyalkyl group, and n is an integer of 2 to 6, (c) 0 to 40% by mole of the structural unit of the formula:
wherein R5 is an alkyl, alicyclic or fluoroalkyl group, and k is zero or 1, and (d) 0 to 40% by mole of the structural unit of the formula:
wherein n is as defined above, the copolymer being soluble or dispersible in water without using emulsifiers, being capable of crosslinking in the presence of a curing agent and being useful as materials of water-based paints.
一种含氟共聚物,包括(a)20%至 80%(以摩尔计)的式结构单元,其中 X 为 CI 或 F
其中 X 是 CI 或 F, (b) 80%至 20%(以摩尔计)的式结构单元:
其中 R1 是亚烷基或脂环基,M 是碱金属或-NHR2R3R4 基团,其中 R2、R3 和 R4 相同或不同,且各自是 H 或烷基或羟烷基,n 是 2 至 6 的整数, (c) 0 至 40%(摩尔)的式结构单元:
其中 R5 为烷基、脂环基或氟烷基,且 k 为 0 或 1,以及 (d) 0 至 40%(以摩尔计)的式结构单元:
其中 n 如上定义,该共聚物可溶于水或分散于水中而无需使用乳化剂,在有固化剂存在时能够交联,并可用作水基涂料的材料。
Electrodeposition process and electrodeposited article
申请人:Daikin Kogyo Co., Ltd.
公开号:EP0224870A2
公开(公告)日:1987-06-10
An electrodeposition coating composition comprising a fluorine-containing copolymer having an anionic functional group, a curing agent and water, said copolymer comprising:
(a) 20 to 80 % by mole of the structural unit of the formula (l):
-CFX-CF₂- (l)
(b) 5 to 60 % by mole of the structural unit of the formula (2):
(c) 0 to 40 % by mole of the structural unit of the formula (3):
(d) 0 to 40 % by mole of the structural unit of the formula (4):
the total amount of the structural units (a), (b), (c) and (d) being l00 % by mole. The composition of the invention can be baked to substrates at a low temperature in comparison with compositions containing conventional fluorine-containing copolymers, and the films obtained by electrodepositing the composition are excellent in gloss, weatherability, adhesion to the substrates, alkali resistance and smoothness.