Abstract Tungstosilicicacid was found to be an efficient catalyst for the synthesis of trisphenols using the reaction of 2,6-bis(hydroxymethyl)phenols with phenols in an aqueous medium. The catalytic reactivity of tungstosilicicacid in boiling water was examined with a series of substrates, demonstrating that this catalyst is reactive in the presence of a variety of functionalities. Tungstosilicic acid
enols (BMP) (6 examples) is reported using sulfonated multi-walled carbon nanotubes (SO3H@MWCNTs) under solvent-free conditions as starting precursors for the synthesis of macrocyclic molecules of calix[4]arenes. The new protocol provides a series of trisphenol derivatives (21 examples) in high yields (up to 94%) and relatively short reaction times (15–120 min). Also, directsynthesis of calix[4]arenes
据报道,在无溶剂条件下使用磺化多壁碳纳米管(SO 3 H @ MWCNTs)作为苯酚衍生物(12种底物)与2,6-双(羟甲基)苯酚(BMP)的缩合(6个实例)用于合成杯[4]芳烃的大环分子。该新方案以高收率(高达94%)和相对较短的反应时间(15-120分钟)提供了一系列三酚衍生物(21个实例)。另外,已有报道通过使用催化剂由不同的三酚直接合成杯[4]芳烃(5个实例)。此外,合成的杯[4]芳烃是通过一锅法从简单易得的原料(如p)获得的。-甲酚合成5,11,17,23-四甲基杯[4]芳烃-25,26,27,28-四醇。同样,在此过程中,SO 3 H @ MWCNTs可以以几乎一致的效率重复使用七次,并且可以通过简单的过滤回收。
Preparation and Bacteriostatic Properties of Substituted Trisphenols
作者:David J. Beaver、Roland S. Shumard、Paul J. Stoffel
DOI:10.1021/ja01118a030
日期:1953.11
A stepwise synthesis of functionalized calix [4]arenes and a calix[6]arene with alternate electron-withdrawing substituents
作者:Javier de Mendoza、Pedro M. Nieto、Pilar Prados、Concha Sánchez
DOI:10.1016/s0040-4020(01)85448-x
日期:1990.1
Synthesis of Polyfunctional Aromatic Ring Systems (Phloroglucide Analogs) under Microwave Irradiation
efficient and rapid synthesis of phloroglucideanalogsundermicrowaveirradiation is described. The solid-phase condensation reaction of the 4-halo-2,6-bis(hydroxymethyl)phenols 1a,b with other substituted phenols in the presence of ZnCl2 afforded the target molecules in much higher yields than by classical solution-phase synthesis and allowed us to prepare new phloroglucideanalogs possessing sensitive