5-dimethoxy-4-oxopentanal to give (±)- trans -4-hydroxy-5-methoxy-2-cyclopentenone and (±)- trans -4,5-dihydroxy-2-cyclopentenone. The latter product did not isomerize to 2,3-dihydroxy-2-cyclopentenone (reductic acid) on prolonged reaction.
摘要通过(5,5-二甲氧基-4-氧
戊醛)对(±)-顺式或(±)-反式-四氢-2,5-二甲氧基-2-
呋喃甲醛二甲基
乙缩醛进行仔细
水解,得到(±)-反式-4 -羟基-5-甲氧基-
2-环戊烯酮和(±)-反式-4,5-二羟基-
2-环戊烯酮。在长时间的反应中,后一种产物没有异构化为2,3-二羟基-
2-环戊烯酮(
还原酸)。