SYNTHESIS AND SUBSTITUENT EFFECT ON 31P NMR CHEMICAL SHIFT OF ORTHO HYDROXYARYL DIALKYL PHOSPHINE OXIDES

S Li, G Wang

Index: Li, Shusen; Wang, Guoquan Phosphorus, Sulfur and Silicon and the Related Elements, 1991 , vol. 61, # 12 p. 119 - 129

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Citation Number: 7

Abstract

Abstract In this paper, the synthetic methods for the preparation of o-hydroxyaryl dialkyl phosphine oxides (I) are introduced. The title compounds with low bulky substituent are synthesized successfully by the reactions of the Grignard reagents with diethyl o- hydroxyarylphosphonates derived from the rearrange-ment of aryl dialkyl phosphates in good yields. The title compounds with high steric hindered alkyl groups can be prepared ...