HYBRID BLOCK COPOLYMER MICELLES WITH MIXED STEREOCHEMISTRY FOR ENCAPSULATION OF HYDROPHOBIC AGENTS
申请人:SILL Kevin N.
公开号:US20080274173A1
公开(公告)日:2008-11-06
The present invention relates to the field of polymer chemistry and more particularly to multiblock copolymers and micelles comprising the same.
本发明涉及聚合物化学领域,更具体地说是涉及多嵌段共聚物以及包含该共聚物的胶束。
Electron Transfer to Sulfides and Disulfides: Intrinsic Barriers and Relationship between Heterogeneous and Homogeneous Electron-Transfer Kinetics
作者:Ana Belèn Meneses、Sabrina Antonello、Maria Carmen Arévalo、Concepcion Carmen González、Jadab Sharma、Andrea N. Wallette、Mark S. Workentin、Flavio Maran
DOI:10.1002/chem.200700382
日期:2007.9.28
dissociative electrontransfer (DET) which causes cleavage of the C(alkyl)--S or S--S bond. A generalized picture of how the intrinsic electron-transfer barrier depends on molecular features, ring substituents, and the presence of spacers between the frangible bond and aromatic groups was established. The reduction mechanism was found to undergo a progressive (and now predictable) transition between common
Unsymmetrical Disulfides Synthesis
<i>via</i>
Cs
<sub>2</sub>
CO
<sub>3</sub>
‐Catalyzed Three‐Component Reaction in Water
作者:Dungai Wang、Yuanji Gao、Yunli Tong、Mingteng Xiong、Xiao Liang、Heping Zhu、Yuanjiang Pan
DOI:10.1002/adsc.202000851
日期:2020.11.18
An unsymmetrical disulfides synthesis by Cs2CO3‐catalyzedthree‐component coupling reaction of thioacetate, sodium thiosulfate, and benzyl halide in water is described. The safe, stable, and non‐toxic Na2S2O3 was invoked as the sulfur‐source, successfully avoiding the odor generation in the process of S−S bond formation. A wide range of substrate suitability and appropriate functional group tolerance
描述了由Cs 2 CO 3催化的硫代乙酸盐,硫代硫酸钠和苄基卤化物在水中的三组分偶联反应合成的不对称二硫化物。安全,稳定且无毒的Na 2 S 2 O 3被用作硫源,成功避免了在S-S键形成过程中产生的气味。观察到广泛的底物适应性和适当的官能团耐受性用于转化。值得注意的是,此处报道的方法与各种生物分子兼容,包括葡萄糖,香豆素和喹啉酮。
Selective Benzylic and Allylic Alkylation of Protic Nucleophiles with Sulfonamides through Double Lewis Acid Catalyzed Cleavage of sp<sup>3</sup>Carbon-Nitrogen Bonds
broad range of tosyl‐activated benzylic and allylic amines to give diversely functionalized products in good to excellent yields and with high regioselectivity. Furthermore, the cross‐coupling reaction of 1,3‐dicarbonyl compounds with benzylic propargylicamine derivatives has been successfully applied to the one‐step synthesis of polysubstituted furans and benzofurans.