Flash vacuum pyrolysis of a series of 1,2,4-trioxo-3-triphenylphosphoranylidene-butane derivatives, formed by acylation of β-oxo-phosphorus ylides with α-oxo-acid chlorides, results in extrusion of Ph3PO exclusively across the 2,3-position to give diacylalkynes.
快速真空热解一系列1,2,4-三氧代-3-三苯基
磷酰亚芳基-
丁烷衍
生物,该衍
生物是通过将β-氧代
磷酰基化物与α-氧代酰
氯酰化而形成的,导致Ph 3 PO仅在整个反应釜中挤出。2,3-位生成二酰基
炔烃。