Structural effects in reactions of organophosphorus compounds. I. Reactions of phosphorus oxychloride with hindered phenols
作者:Gennady M. Kosolapoff、Charles K. Arpke、Robert W. Lamb、Hans Reich
DOI:10.1039/j39680000815
日期:——
2,6-Dialkyl-phenols exhibit little steric hindrance on reaction with phosphoryl chloride unless the alkyl substituent is bulky (i.e. t-butyl). Where bulky substituents are present reaction with phosphoryl chloride occurs only in the presence of Friedel–Crafts type catalysts after either a dealkylation or a rearrangement of the ortho-placed alkyl groups, followed by O-phosphorylation, has occurred.
除非烷基取代基是大体积的(即叔丁基),否则2,6-二烷基苯酚与磷酰氯的反应几乎没有空间位阻。在存在大量取代基的情况下,只有在邻位烷基脱烷基或重排,然后进行O-磷酸化后,才在Friedel-Crafts型催化剂存在下与磷酰氯发生反应。