[2 + 2] Cycloaddition of <i>o</i>-Carboryne with Vinyl Ethers: Synthesis of Carborane-Fused Cyclobutanes
作者:Jie Zhang、Zuowei Xie
DOI:10.1021/acs.organomet.0c00163
日期:2020.12.14
precursor, o-carboryne undergoes an efficient [2 + 2] cycloaddition with a large variety of vinylethers at room temperature to give a series of carborane-fused cyclobutanes in very good to high isolated yields. This reaction is compatible with many functional groups and has a very broad substrate scope ranging from alkyl- to aryl- and to silyl-substituted vinylethers. A stepwise reaction mechanism is proposed
Direct vinylation of natural alcohols and derivatives with calcium carbide
作者:Siew Ping Teong、Ariel Yi Hui Chua、Shiyun Deng、Xiukai Li、Yugen Zhang
DOI:10.1039/c6gc03579e
日期:——
A transition metal-free, mild, and safe protocol has been developed for direct vinylation of various sugar alcohols, phenol and its derivatives with calciumcarbide.
Provided herein are heterocyclic compounds and pharmaceutical compositions comprising said compounds that are useful for inhibiting the growth of gram-negative bacteria. The subject compounds and compositions are useful for the treatment of bacterial infections, such as pneumonia.
Thiol compound derivative, hardening compositions containing these derivatives and molded articles thereof
申请人:——
公开号:US20040162368A1
公开(公告)日:2004-08-19
The present invention relates to a thiol compound derivative represented by the following formula (1), a curable composition containing the derivative, and a molded product made of the composition. More particularly, the invention relates to a thiol compound derivative which is added to a polymer having reactivity to a thiol derivative substituent to provide a curable composition, a curable composition containing the derivative and a crosslinkable halogen-containing crosslinking polymer, and a crosslinked molded product of the composition.
1
wherein X
1
, X
2
and X
3
are each a group represented by the following formula (2).
2
本发明涉及由下式(1)表示的硫醇化合物衍生物、含有该衍生物的可固化组合物以及由该组合物制成的模塑产品。更具体地说,本发明涉及一种硫醇化合物衍生物,将其添加到对硫醇衍生物取代基具有反应活性的聚合物中,以提供一种可固化组合物、一种含有该衍生物和一种可交联含卤交联聚合物的可固化组合物,以及一种由该组合物制成的交联模塑产品。
1
其中 X
1
, X
2
和 X
3
分别是下式(2)所代表的一个基团。
2
THIOL COMPOUND DERIVATIVES, HARDENING COMPOSITIONS CONTAINING THESE DERIVATIVES AND MOLDED ARTICLES THEREOF