N-(对甲苯磺酰)吲哚 、 苯甲醛 在
silica gel 作用下,
以
neat (no solvent) 为溶剂,
反应 9.0h,
以81%的产率得到1-(4-Methylphenyl)sulfonyl-3-[[1-(4-methylphenyl)sulfonylindol-3-yl]-phenylmethyl]indole
参考文献:
名称:
Synthesis of bis(indolyl)methanes using silica gel as an efficient and recyclable surface
摘要:
Here we describe a simple, clean, and efficient solvent-free protocol for the synthesis of bis(indolyl)methanes promoted by silica gel. The products were obtained in good to excellent yields through the reaction of indoles with cyclohexanone and a range of aldehydes. The silica gel was easily recovered and utilized for further reactions without loss of activity. (C) 2012 Elsevier Ltd. All rights reserved.