A practical and efficient protocol for Ag/Ru-cocatalyzed regioselective C-H amination of 8-hydroxyquinoline esters with pyrazoles was developed, This reaction proceeded smoothly via a photoredox-mediated direct C-H/N-H oxidative coupling process. The remarkable features of this reaction include the wide substrate scope, mild reaction conditions and high regioselectivity at the C4 site of the quinolinyl
Direct C4–H phosphonation of 8-hydroxyquinoline derivatives employing photoredox catalysis and silver catalysis
作者:Xiaoxue Su、Fan Yang、Yusheng Wu、Yangjie Wu
DOI:10.1039/c8ob00370j
日期:——
A simple and efficient protocol for the C4–H phosphonation of 8-hydroxyquinoline derivatives was developed under a photoredox/silver(I) cocatalysis system, providing a new approach to phosphonated 8-hydroxyquinoline derivatives. Note that the reaction did not occur at the C5 site, but regioselectively at an unusual C4 site. Moreover, the reaction proceeded smoothly under mild reaction conditions (a
Directing-group-assisted copper-catalyzed oxidative esterification of phenols with aldehydes
作者:Yong Zheng、Wei-Bin Song、Li-Jiang Xuan
DOI:10.1039/c5ob01465d
日期:——
A directing-group-assisted copper-catalyzed oxidative esterification of phenols with aldehydes using TBHP as an oxidant was described.
使用TBHP作为氧化剂,利用导向基辅助的铜催化氧化酯化方法,将酚与醛进行酯化反应。
Synthesis and antilipolytic activities of quinolyl carbanilates and related analogs
作者:John H. Musser、Utpal Chakraborty、Kevin Bailey、Stan Sciortino、Carol Whyzmuzis、Dilip Amin、Charles A. Sutherland
DOI:10.1021/jm00384a011
日期:1987.1
A series of quinolyl carbanilates was prepared and tested as antilipolytic agents. These compounds inhibited production of glycerol from rat adipocytes and inhibited liberation of free fatty acids from triolein by canine cardiac triglyceride lipases. An extensive structure-activity relationship study indicated that 8-quinolyl 4-methoxycarbanilate (1) contained features necessary for maximum potency
Determination of Latent Mesogenic Behavior in Nonmesogenic Compounds by Extrapolation Method
作者:U. C. Bhoya、N. N. Vyas、A. V. Doshi
DOI:10.1080/15421406.2011.604590
日期:2012.1.1
atoms in the n-alkyl chain of each homologue versus LTT is plotted and a phase diagram is obtained. The isotropic–nematictransition curve behaves in a normal manner like a curve behaving for a typical nematogenic homologousseries, including odd–even effects in its phase diagram. This method is useful to determine the probable temperature at which a nonmesogenic substance can show mesogenic behavior, provided