インドール誘導体の研究(第3報) : 3'-Phenylspiro〔2-oxoindoline-3,5'-pyrazole〕類の合成
1966 年 86 巻 12 号 p. 1156-1159
詳細
1966 年 86 巻 12 号 p. 1156-1159
2'-Benzoyl-spiro(2-oxoindoline-3, 3'-oxyrans) (III)(Table I) were prepared by the application of hydrogen peroxide to 3-phenacylideneoxindoles (I). Reaction of III with hydrazine hydrate afforded 3'-pheny1-4'-hydroxy-spiro[2-oxoindoline-3, 4'-(2'-pyrazolines)](IV) (Table II). Dehydration of IV with saturated methanolic hydrochloric acid gave 3'-phenylspiro-[2-oxoindoline-3', 5'-pyrazoles](V) (Table III).
