| 单词 | chemoselective | 
| 释义 | chemoselectiveadj. Chemistry.   Of a chemical reaction or procedure: involving a particular functional group in preference to one or more others which are available. ΚΠ 1976    Tetrahedron 32 926/2  				Chemical transformations without the protection of other functional groups may conveniently be classified as being chemoselective or chemospecific. 1985    Science 22 Feb. 913/3  				In defining strategies..to construct complex molecules we require synthetic methods that can..perform a wanted structural change and none other (that is, be chemoselective). 2004    W. Carruthers  & I. Coldham Mod. Methods Org. Synthesis 		(ed. 4)	 i. 25  				Chemoselective reduction of the ester group in the presence of the carboxylic amide..gave iridomyrmecin. Derivatives  chemoseˈlectively adv. Chemistry in a chemoselective manner. ΚΠ 1978    Tetrahedron Lett. No. 33. 3043  				Methyl levulinate..can be allylated chemoselectively only at the keto group but not at the ester group to give a lactone. 2000    A. F. Parsons Introd. Free Radical Chem. vii. 152  				Reaction of aryl bromide..with tributyltin hydride chemoselectively breaks the carbon-bromine bond to generate the reactive aryl radical. This is a new entry (OED Third Edition, December 2008; most recently modified version published online March 2022). < | 
| 随便看 | 
 | 
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。