6-tert-butyl-5-hydroxybenzofuran 在
钯氢气 、 钯 、 silica gel 、 正己烷 作用下,
以
溶剂黄146 为溶剂,
反应 6.0h,
以to give 0.05 g of 6-t-butyl-5-hydroxy-2,3-dihydrobenzofuran as a white solid (yield 71%)的产率得到6-tert-butyl-2,3-dihydro-5-benzofuranol
2,3-Dihydrobenzofuran derivatives of general formula (1):
wherein R1 represents a hydrogen atom or an acyl group; R2, R3 and R4 represent a hydrogen atom, a lower alkyl group or a lower alkenyl group; R5 and R6 represent a hydrogen atom or an optionally substituted alkyl group, or R5 and R6 combine to form a cycloalkyl group or a saturated heterocyclic group containing one or more oxygen atoms or alkyl-substituted nitrogen atoms, provided that R2 and R3 can not simultaneously represent a t-butyl group, or optically active isomers or pharmaceutically acceptable salts thereof are useful as therapeutic or prophylactic agents for various renal diseases and as organ preservatives.
Thermolysis of 4-(ω-hydroxyalkyl)-2,6-di-tert-butylphenols
作者:A. P. Krysin、T. G. Egorova、V. G. Vasil’ev
DOI:10.1134/s1070363210020167
日期:2010.2
The process of thermolysis of tert-butylated hydroxyalkyl phenols includes de-tert-butylation, etherification, and fragmentation of the hydroxyalkyl group. On the basis of the proposed schemes of the mechanism of thermal de-tert-butylation the path of the search for catalysts for the synthesis of 4-hydroxyalkylphenols is defined and transformations of the by-products into biologically active substances were considered.
BARKER, PETER;FINKE, PAUL;THOMPSON, KEVAN, SYNTH. COMMUN., 19,(1989) N-2, C. 257-265
作者:BARKER, PETER、FINKE, PAUL、THOMPSON, KEVAN
DOI:——
日期:——
Composition tinctoriale pour fibres kératiniques, contenant des précurseurs de colorants d'oxydation et des hydroxybenzofurannes utilisés comme coupleurs, et procédé de teinture mettant en oeuvre ces compositions