反应详情

The starting 1-chloro-4-(2-phenyl-3,4-dihydro-2H-1-benzopyrane-7-yloxy)-2-butanol was prepared from 2-phenyl-7-hydroxy-3,4-dihydro-2H-1-benzopyrane (J.Chem. Soc., 3137; 1954) and 1,4-dichlorobutanol according to example 1 (b), or from 1-phenyl-7-hydroxy-3,4-dihydro-2H-1-benzopyrane and 1-chloro-3,4-epoxybutane according to example 1 (c).