Synthesis and Enantiomer Recognition of the 18-Crown-6 Derivative Containing Two Tert-Butyl Substituents as a Chiral Barrier
作者:Koichiro Naemura、Michi Ueno
DOI:10.1246/bcsj.63.3695
日期:1990.12
The optically active 18-crown-6 derivative having two tert-butyl substituents as a chiral barrier was prepared by using (−)-(R)-3,3-dimethylbutane-1,2-diol as a chiral source and its chiral recognition behavior in transport of racemic guest molecules through bulk liquid membranes was investigated.
Synthetic applications of the amine-base treatment in the ozonolysis of substituted-allyl silyl ethers or -allyl esters via a novel ene–diol type rearrangement
作者:Yung-Son Hon、Ying-Chieh Wong
DOI:10.1016/j.tetlet.2004.12.135
日期:2005.2
The ozonolysis of substituted-allyl silyl ethers or -allyl esters followed by treatment with bases gave the corresponding α-silyloxy ketones or α-acyloxy ketones in good yields. The reaction is proposed to proceed via a novel ene–diol rearrangement of the corresponding α-silyloxy aldehydes or α-acyloxy aldehydes intermediates.
Arylation of α-pivaloxyl ketones with arylboronic reagents via Ni-catalyzed sp3 C–O activation
作者:Kun Huang、Gang Li、Wei-Ping Huang、Da-Gang Yu、Zhang-Jie Shi
DOI:10.1039/c1cc11193k
日期:——
A SuzukiâMiyaura coupling of α-pivaloxyl ketonesviaNi-catalyzed sp3 CâO activation to produce α-aryl ketones is developed. This study offers a convenient method to construct α-arylation products from readily available α-hydroxyl carbonyl compounds.
Self-Assembled Brush Block Copolymer-Nanoparticles for Drug Delivery
申请人:UNIVERSITY OF CONNECTICUT
公开号:US20160243141A1
公开(公告)日:2016-08-25
The invention provides amphiphilic liquid crystalline brush block copolymers that can readily self-assemble to nanoparticles in aqueous solutions and also allow for encapsulation of hydrophobic pharmaceutically active molecules.