Cyanoacetylene and Its Derivatives: XXXII. Addition of Ammonia and Methylamine to 4-Hydroxy-4,4-diphenyl-2-butynenitrile
作者:A. G. Mal’kina、L. V. Sokolyanskaya、R. N. Kudyakova、L. M. Sinegovskaya、A. I. Albanov、O. A. Shemyakina、B. A. Trofimov
DOI:10.1007/s11178-005-0121-2
日期:2005.1
Nucleophilic addition of ammonia (25% aqueous solution) and methylamine to 4-hydroxy-4,4-diphenyl-2-butynenitrile occurs under mild conditions to afford 4-amino(or methylamino)-2,5-dihydro-5,5-diphenyl-2-iminofurans. 4-Hydroxy-4,4-diphenyl-2-butynenitrile in anhydrous liquid ammonia gives rise to 3-amino-4-hydroxy-4,4-diphenyl-2- butenenitrile which is quantitatively converted into the corresponding iminodihydrofuran or iminodihydrofuran hydrochloride in the presence of 10 wt % of KOH or gaseous hydrogen chloride. 4-Amino- and 4-methylamino-2-iminofurans react with 4-hydroxy-4-methyl-2-pentynenitrile to give 3-(4-amino- and 4-methylamino-5,5-diphenyl-2,5-dihydrofuran-2-ylideneamino)-4-hydroxy-4-methyl-2-pentenenitriles.
在温和条件下,氨(25% 水溶液)和甲胺与 4-羟基-4,4-二苯基-2-丁炔腈发生亲核加成反应,生成 4-氨基(或甲基氨基)-2,5-二氢-5,5-二苯基-2-亚氨基呋喃。4-羟基-4,4-二苯基-2-丁炔腈在无水液氨中生成 3-氨基-4-羟基-4,4-二苯基-2-丁烯腈,在 10 wt % 的 KOH 或气态氯化氢存在下,可定量转化为相应的亚氨基二氢呋喃或亚氨基二氢呋喃盐酸盐。4-氨基和 4-甲基氨基-2-亚氨基呋喃与 4-羟基-4-甲基-2-戊烯腈反应,生成 3-(4-氨基和 4-甲基氨基-5,5-二苯基-2,5-二氢呋喃-2-亚基氨基)-4-羟基-4-甲基-2-戊烯腈。