The behavior of 3,4,5-trimethoxybenzylidenemalononitrile towards alkyl phosphites

摘要

3,4,5-Trimethoxybenzylidenemalononitrile 1 reacts with trialkyl phosphites 2a-c in the absence of solvent to give the phosphonate derivatives 4a-c. The dimeric compound 6 also was produced in the reaction with 2c. The phosphonates 8a-c were produced when compound 1 was allowed to react with dialkyl phosphites 3a-c under the same experimental conditions. A mechanism is proposed to explain the formation of compounds 4 and 6. [References: 16]