A simple and safe method for producing optically active 1,4-benzodioxane derivatives useful as intermediates for pharmaceuticals and the like from inexpensive materials is provided. An optically active triol compound (5) produced by reaction of catechol (2) and optically active 3-halogeno-1,2-propanediol (3) is sulfonylated to form optically active trisulfonate (6), followed by cyclization with a base to yield optically active 1,4-benzodioxane (1).
提供了一种简单而安全的方法,从廉价原料中生产出光学活性的1,4-苯并
二氧六环衍
生物,这些衍
生物可用作制药中间体等。通过对
邻苯二酚(2)和光学活性的3-卤代-
1,2-丙二醇(3)反应产生的光学活性三醇化合物(5),进行磺酰化形成光学活性三
磺酸盐(6),然后与碱进行环化反应,得到光学活性的1,4-苯并
二氧六环(1)。