One-pot oxidative hydrolysis-oxidative cleavage of 7-borylindoles enables access to <i>o</i>-amidophenols and 4-acylbenzoxazoles
作者:Kirsty Anderson、Andrew S. Eastabrook、Jonathan Sperry
DOI:10.1039/c9cc09807k
日期:——
o-amidophenol derivatives. Subsequent cyclisation delivers benzoxazoles bearing an acyl group at C4, a substitution pattern common to fungal-derived benzoxazole alkaloids. Using 7-borylindoles as substrates to access functionalised o-amidophenols circumvents the difficult preparation of these compounds from arenes, streamlining access to substituted 4-acylbenzoxazoles in the process.
Ir-Catalyzed Functionalization of 2-Substituted Indoles at the 7-Position: Nitrogen-Directed Aromatic Borylation
作者:Sulagna Paul、Ghayoor A. Chotana、Daniel Holmes、Rebecca C. Reichle、Robert E. Maleczka,、Milton R. Smith
DOI:10.1021/ja0631652
日期:2006.12.1
Ir-catalyzed borylation of 2-substituted indoles selectively yields 7-borylated products in good yields. N-Protection, required for previous functionalizations of 2-substituted indoles, is unnecessary.
2-取代吲哚的 Ir 催化硼酸化选择性地以良好的产率产生 7-硼酸化产物。2-取代吲哚的先前功能化所需的N-保护是不必要的。