Reactions of 2-Nitro- and 2-Bromo-2-nitroethenylphosphonates with Anthracene

摘要

Bis(2-chloroethyl) 2-nitro- and 2-bromo-2-nitroethenylphosphonates react with anthracene along two competing pathways:[4+2] cycloaddition and electrophilic substitution;in the case of the bromo derivative,the resulting products undergo dehydrobromination under the reaction conditions to form anthracene-and dihydroanthracene-containing nitroethenylphosphonates.