Ortho esters and ortho carbonates can be produced by alkylating esters and carbonates with, for example, the hexafluorophosphate salt of a trialkyl oxonium ion. The spiro species are useful intermediates in the synthesis of complex organic molecules. Synthetic pathways for the production of medically active compounds incorporates spiro ortho esters. Anti-first-pass effect materials are produced in high yield utilizing a synthetic strategy incorporating cyclic ortho ester intermediates.
正
酯和正
碳酸酯可以通过与三烷基
氧铵离子的
六氟磷酸盐进行烷基化来制备。螺环物种在复杂有机分子的合成中是有用的
中间体。用于生产具有药用活性的化合物的合成途径包括螺环正
酯。利用包含环状正
酯中间体的合成策略,高产率地生产抗第一过肝效应材料。