Efficient Ruthenium-Catalysed Synthesis of 3-Hydroxy-1-propen-1-yl Benzoates: En Route to an Improved Isomerization of 2-Propyn-1-ols into α,β-Unsaturated Aldehydes
作者:Michel Picquet、Aranzazu Fernández、Christian Bruneau、Pierre H. Dixneuf
ruthenium(II) and acid-catalysed one-pot selective transformation of 2-propyn-1-ols into α,β-unsaturated aldehydes has been developed. The complex [(dppe)Ru(η3-CH2C(Me)CH2)2] (dppe = Ph2PCH2CH2PPh2) is an efficient precatalyst for the anti-Markovnikov addition of benzoic acid to 2-propyn-1-ols with the formation of 3-hydroxy-1-propen-1-yl benzoates in good yields. The latter readily undergo rapid transformation