Formation of Unsymmetrical Trinuclear Metallamacrocycles Based on Two Different Cone Calix[4]arene Macrocyclic Rings

ﻟﺍ ﻞﺼﻔﻟﺍ ﻱﺪﻴﻬﻤﺘ ﻟﺍ ﺚﺤﺒﻟﺎﺑ ﻒﻳﺮﻌﺘ 23 ﻞـﻣﺎﻌﻣ :ﻲﻬﻓ ﺔﻠﻤﻌﺘﺴﳌﺍ ﺔﻴﺋﺎﺼﺣﻹﺍ ﻞﺋﺎﺳﻮﻟﺍ ﺎﻣﺃ .ﻲﻔﻃﺎﻌﻟﺍ ﺀﺎﻛﺬﻟﺍﻭ

Abstract - A new class of calix[4]arene derivatives bearing one or two nitrone groups on the upper rim has been synthesized using the oxidation of chiral imines with

purpose, we designed a tert-butylcalixarene (with a shape analogue to the one of (3-4H), Figure 1) presenting a cone conformation combined with a tweezer shape,

2.2.1 Synthesis of naturally occurring aryl alkyl ethers based on intermolecular Ullmann and Chan-Lam-Evans reactions ……… 40.. 2.2.2 The intramolecular aliphatic Ullmann reaction

Por su parte, José María Servet acude a las técnicas propias a la ficción literaria como la subjetividad y la función poética del lenguaje para transmitir al lector las

Here, we report on the design, synthesis and characterization of a series of multivalent ligands based on CA or TCA, in 1,3- Alternate conformation, bearing four

prevents the formation of complexes having two PR 3 ligands coordinated to the metal centre.. as it is usually the case for standard tertiary

In some cases, the ‘long’ reaction way is used for primary modifications, that consists of the following steps: protection of the primary, than the secondary face, deprotection of