Provided are a process for producing 6-methyl-3-hepten-2-one by cross aldol condensation carried out while each continuously adding to acetone, isovaleraldehyde and an aqueous alkali containing an alkaline substance; a process for producing a 6-methyl-2-heptanone analogue represented by Formula (1):
wherein n is an integer of 0 or 1 or more;
which comprises allowing hydrogen, acetone and an aldehyde represented by Formula (2):
wherein n is as defined above; X and Y each represents a hydrogen atom or they are coupled together to form a carbon-carbon bond; and Z and W each represents a hydrogen atom or they are coupled together to form a carbon-carbon bond;
to react in the presence of an aqueous alkali containing an alkaline substance, and a hydrogenation catalyst; and a process for producing phyton or isophytol using the 6-methyl-3-hepten-2-one or the 6-methyl-2-heptanone analogue.
本发明提供了一种在
丙酮、
异戊醛和含有碱性物质的
水碱中各连续加入一种物质的情况下,通过交叉醛醇缩合反应生产6-甲基-
3-庚烯-2-酮的工艺;一种生产由式(1)表示的6-甲基-2-庚
酮类似物的工艺:
其中 n 为 0 或 1 或更多的整数;
其中包括允许氢、
丙酮和由式(2)代表的醛:
其中 n 如上定义;X 和 Y 各代表一个氢原子或它们耦合在一起形成一个碳-碳键;Z 和 W 各代表一个氢原子或它们耦合在一起形成一个碳-碳键;
在含有碱性物质的
水碱和氢化催化剂存在下进行反应;以及使用 6-甲基-
3-庚烯-2-酮或 6-甲基-2-庚
酮类似物生产
植醇或
异植醇的工艺。