2-(4-Hydroxy-5-oxo-1,3,6-cycloheptatrien-1-ylamino)-2-butenedioic Acid Diethyl Ester 、
二苯醚 在
溶剂黄146 作用下,
以
正己烷 为溶剂,
反应 0.5h,
以to obtain crystals of the title compound, mp > 300° C. and ν max 3270, 3170, 3100, 1740, 1620 and 1575 cm-1的产率得到6-hydroxy-4,7-dioxo-4,7-dihydro-1
H-cyclohepta[
b]pyridine-2-carboxylic acid ethyl ester