Allenes. Part XIV. The synthesis of allenynols and allenenols by the reduction of 4,6-diyn-2-en-1-ols and diynediols with lithium aluminium hydride
作者:S. R. Landor、E. S. Pepper、J. P. Regan
DOI:10.1039/j39670000189
日期:——
The reduction of 4,6-diyn-2-en-ols with an excess of lithium aluminium hydride gives allenenes (3,5,6-trien-1-ols) as the main product and allenynes as the minor product. DL-Marasin, claimed to be the product from the reduction of non-2-en-4,6,8-triyn-1-ol, was shown to be a minor component only. Reduction with dialkoxylithium aluminium hydride gave improved yields of allenynes together with allenenes
用过量的氢化铝锂还原4,6-二炔-2-烯醇可得到主要产物丙二烯(3,5,6-三烯-1-醇),次要产物烯丙炔。DL- Marasin声称是非2-en-4,6,8-triyn-1-ol还原的产物,被证明仅是次要成分。用二烷氧基锂氢化铝还原可提高烯丙炔与烯丙炔的收率,而氢化铝锂-丁烷-2,3-二醇络合物仅可得到烯丙炔。