Synthesis and reactions of 2-chloro-1,3-bis(trimethylsilyloxy)-1,3-butadienes
摘要:
The reaction of 2-chloro-1,3-bis(trimethylsilyloxy)-1,3-butadienes with various electrophiles allows a convenient synthesis of chlorinated molecules which are not readily available by other methods. (C) 2008 Elsevier Ltd. All rights reserved.
Synthesis of 4-hydroxy- and 2,4-dihydroxy-homophthalates by [4+2] cycloaddition of 1,3-bis(silyloxy)-1,3-butadienes with dimethyl allene-1,3-dicarboxylate
作者:Ibrar Hussain、Mirza A. Yawer、Bettina Appel、Muhammad Sher、Ahmed Mahal、Alexander Villinger、Christine Fischer、Peter Langer
DOI:10.1016/j.tet.2008.05.118
日期:2008.8
The reaction of 1,3-bis(trimethylsiloxy)-1,3-butadienes with dimethyl allene-1,3-dicarboxylate provides a convenient and regioselective approach to a variety of functionalized 4-hydroxy- and 2,4-dihydroxy-homophthalates.
Substituted 3,5-dioxopimelic acid diesters, stable 1,3,5,7-tetracarbonyl derivatives, were prepared by condensation of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with methyl malonyl chloride. The influence of the substituents and the solvent on the keto–enoltautomerization of these compounds was investigated by NMR spectroscopy. For the parent compound, the experimental findings were compared with
Hetero-Diels–Alder reaction of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with arylsulfonylcyanides. Synthesis and antimicrobial activity of 4-hydroxy-2-(arylsulfonyl)pyridines
Hetero-Diels-Alder reactions of 1,3-bis(silyloxy)-1,3-butadienes with arylsulfonylcyanides afforded a variety of 4-hydroxy-2-(arylsulfonyl) pyridines. Several derivatives show antimicrobial activity against Gram-positive bacteria. (c) 2008 Elsevier Ltd. All rights reserved.