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。
Iron-Catalyzed Vinylic C−H Alkylation with Alkyl Peroxides
作者:Liang Ge、Wujun Jian、Huan Zhou、Shaowei Chen、Changqing Ye、Fei Yu、Bo Qian、Yajun Li、Hongli Bao
DOI:10.1002/asia.201800534
日期:2018.9.4
are readily accessible from carboxylic acids, are utilized as general primary, secondary, and tertiary alkylating reagents for iron‐catalyzed vinylic C−H alkylation of vinyl arenes, dienes, and 1,3‐enynes. This transformation affords olefinic products in up to 98 % yield with high E/Z values. A broad range of functionalities, including carboxyl, boronic acid, methoxy, ester, amino, and halides, are
Iron‐Catalyzed Radical Decarboxylative Oxyalkylation of Terminal Alkynes with Alkyl Peroxides
作者:Xiaotao Zhu、Changqing Ye、Yajun Li、Hongli Bao
DOI:10.1002/chem.201701830
日期:2017.8
An iron‐catalyzed oxyalkylation of alkynes with alkyl peroxides as the alkylating reagents has been investigated. Alkyl peroxides are readily available from aliphatic acids and serve simultaneously as the alkylating reagents and internal oxidants. Primary, secondary, and tertiary alkyl groups of aliphatic acids were readily incorporated into C−C triple bonds and diverse α‐alkylated ketones were synthesized
Polyolefin products with improved toughness, strength and heat resistance
申请人:Borealis GmbH
公开号:EP1167404A1
公开(公告)日:2002-01-02
Polyolefin products with high requirements for toughness, strength and heat resistance, produced from modified olefin polymers based on modified propylene polymers which have been modified by reaction with bifunctional monomers in the presence of free-radical generators in the solid phase.
The polyolefin products are particularly suitable for shock-absorbing components of motor vehicles, such as bumpers, spoilers and side edge protection elements.
This invention relates to an ethylene polymer having a weight average molecular weight of at least 120,000 comprising 1-50 tertiary double bonds per 10,000 carbon atoms.