Highly efficient Ru(<scp>ii</scp>)–alkylidene based Hoveyda–Grubbs catalysts for ring-closing metathesis reactions
作者:Mariam Y. Al-Enezi、Elizabeth John、Yehia A. Ibrahim、Nouria A. Al-Awadi
DOI:10.1039/d1ra07428h
日期:——
Three novel phosphine-free Ru-alkylidenes (7a–7c) have been synthesized and utilized as efficient catalysts for ring closing metathesis (RCM) reaction. Spectroscopic data, i.e. NMR and HRMS, along with single crystal X-ray diffraction analysis, were used to confirm their chemical structures. The tosylated carbenoid 7b showed the highest efficiency in cyclizing different acyclic diene substrates. RCM
已经合成了三种新型的不含膦的 Ru-亚烷基 ( 7a-7c ),并将其用作闭环复分解 (RCM) 反应的有效催化剂。光谱数据,即NMR 和 HRMS,以及单晶 X 射线衍射分析,用于确认它们的化学结构。甲苯磺酰化的类胡萝卜素7b在环化不同的无环二烯底物方面表现出最高的效率。与众所周知的 Grubbs 相比,仅使用催化量 (0.5–2.0 mol%) 的添加剂催化剂 ( 7b ) 就可以很好地耐受各种(未)取代的N、N-二烯丙基苯胺衍生物的 RCM 和不同大分子二烯的立体选择性 RCM (II) 和 Hoveyda-Grubbs (II) 催化剂。
Nijhuis, W. H. N.; Verboom, W.; Harkema, S., Recueil des Travaux Chimiques des Pays-Bas, 1989, vol. 108, # 4, p. 147 - 160
作者:Nijhuis, W. H. N.、Verboom, W.、Harkema, S.、Reinhoudt, D. N.
DOI:——
日期:——
A convenient one-pot synthesis of N-aryl-3-pyrrolines
作者:Karamil Jayaprakash、Chittoor S. Venkatachalam、Kalpattu K. Balasubramanian
DOI:10.1016/s0040-4039(99)01334-9
日期:1999.8
N-propargylanilines, under one-pot homologation conditions, undergo an in situ cyclisation catalysed by Cu(I) to yield 3-pyrrolines in good yield. (C) 1999 Elsevier Science Ltd. All rights reserved.
Arbusow; Fufaew, Doklady Akademii Nauk SSSR, 1952, vol. 85, p. 1017,1019