Process for producing DL-tocopherols and intermediates therefor
申请人:Takeda Chemical Industries, Ltd.
公开号:US05600029A1
公开(公告)日:1997-02-04
The present invention relates to a process for producing dl-tocopherols and intermediates for the production. dl-Tocopherols obtained by the present invention are useful compounds that are used as food additives, feed and medicaments.
Reaction of acetylenic hydrocarbons with α,β-unsaturated ketones in tetrahydrofuran in the presence of lithium naphthalene
作者:Kyoichi Suga、Shoji Watanabe、Toshimitsu Suzuki
DOI:10.1139/v68-504
日期:1968.10.1
Lithium naphthalene reacts easily with terminal acetylenic hydrocarbons, such as acetylene, methyl-acetylene, or phenylacetylene, to give the corresponding lithium compounds quantitatively. The rea...