3-TRIETHYLSILOXY-1,4-PENTADIENE

3-TRIETHYLSILOXY-1,4-PENTADIENE 価格

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3-TRIETHYLSILOXY-1,4-PENTADIENE 化学特性,用途語,生産方法

物理的性質

bp 140°C; n20D 1.4390.

使用

3-Triethylsilyloxy-1,4-pentadiene is used as a masked vinyl ketone synthon; a precursor for either the diene or dienophile in the intramolecular Diels–Alder reaction.) It may be used to prepare the useful 3-triethylsilyloxypentadienyl anion via metalation with sec-butyllithium (eq 1).
A wide variety of electrophiles may be used and the selectivity is based on kinetics.The method has been used to prepare intermediates for intramolecular Diels–Alder reactions (eqs 4 and 5).

製造方法

3-Triethylsilyloxy-1,4-pentadiene is by silylation of 3-hydroxy-1,4-pentadiene with chlorotriethylsilane.1,2 Other relatives of the title compound are available by silylation with chlorotrimethylsilane2 or t-butyldimethylchlorosilane3 3-Trimethylsilyloxy- 1,4-pentadiene is usually prepared and used in situ. Storage of 3-trimethylsilyl-1,4-pentadiene at ?30°C is recommended. The dianion of the parent 3-hydroxy-1,4-pentadiene can also be prepared.

純化方法

Dissolve it in pentane, wash this with H2O, dry (Na2SO4), evaporate, and distil it under vacuum. RF values on Kieselgel 60 are 0.15 (pentane) and 0.60 (*C6H6). [IR, NMR, MS: Oppolzer et al. Helv Chim Acta 64 2002 1981.]

3-TRIETHYLSILOXY-1,4-PENTADIENE 上流と下流の製品情報

原材料

準備製品

3-TRIETHYLSILOXY-1,4-PENTADIENE 生産企業

名前	電話番号	電子メール	国籍	製品カタログ	優位度
Riedel-de Haen AG	--		United States	6825	87
SIGMA-RBI	--		Switzerland	6913	91

62418-65-9()キーワード:

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• 62418-65-9
• 3-TRIETHYLSILOXY-1,4-PENTADIENE
• 3-(triethylsilyloxy)-1,4-pentadiene
• 1,4-Pentadien-3-yloxy-triethylsilane
• Silane, [(1-ethenyl-2-propen-1-yl)oxy]triethyl-