Selective Synthesis of Allenic and Acetylenic Derivatives via Pentaorganylstiboranes
Allenyltetrabutylstiborane (3), formed from allenyltributylstibonium bromide (2) and butylmagnesium bromide, reacted with aldehydes to give homopropargylic alcohols (4) exclusively in excellent yields, while 2-butynyltetrabutylstiborane (6), formed from 2
Zhang, Li-Jun,Huang, Yao-Zeng,Huang, Zhe-Hui
p. 6579 - 6582
(2007/10/02)
A CONVENIENT SYNTHESIS OF α-HYDROXYALLENES BY THE REACTION OF PROPARGYL IODIDES WITH ALDEHYDES IN THE PRESENCE OF STANNOUS HALIDE
In the presence of stannous halide, propargyl iodides react with aldehydes in an aprotic solvent to yield α-hydroxyallenes as major products, particularly in the cases of γ-substituted propargyl iodides, along with β-hydroxyacetylenes.
Mukaiyama, Teruaki,Harada, Taira
p. 621 - 624
(2007/10/02)
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