Meta-hydroxyphenylacetylenes are produced from phenyl-substituted ketal or acetal precursors. Using biotransformation processes, these precursors serve as substrates that are converted to cis-dihydrodiol intermediates. The cis-dihydrodiols can be converted chemically to the corresponding meta-substituted compounds, e.g., meta-substituted phenols, and then to m-hydroxyphenylacetylene, which is an intermediate needed to produce acetylene-terminated resins. The biotransformation step employs arene-2,3-dioxygenase in intra- or extra- cellular form.
间羟基
苯乙炔是从苯基取代的
缩酮或
缩醛前体中生产出来的。通过
生物转化过程,这些前体可作为底物转化为顺式二氢二醇中间体。顺式二氢二醇可以通过
化学反应转化为相应的元代化合物,例如元代
苯酚,然后转化为间羟基
苯乙炔,这是生产
乙炔端
树脂所需的中间体。
生物转化步骤采用细胞内或细胞外形式的炔-2,3-二氧 化酶。