Bulletin of Taras Shevchenko National University of Kyiv. ChemistryВісник Київського національного університету імені Тараса Шевченка. Хімія |
![]() |
Main page / Головна → All issues / Весь Архів → 2020: Issue 1(57) / 2020: Випуск 1(57) → | |
REACTION OF 2-HETARYL-2-(DIHYDROFURAN-2(3H)-ILIDEN)ACETONITRILES WITH AROMATIC AMINESShemehen R., ruslana_shemegen@ukr.netKhilya O. Volovenko Yu. Taras Shevchenko National University of Kyiv, Kyiv, Ukraine Bulletin of Taras Shevchenko National University of Kyiv. Chemistry. 2020, Issue 1(57), P. 47-51. https://doi.org/10.17721/1728-2209.2020.1(57).12 So, a method for the synthesis of 2-hetaryl-6-hydroxy-3-(arylamino)hex-2-enenitriles and 2-hetaryl-2-(N-arylpyrrolidin-2-ylidene)acetonitriles has been developed by us. The proposed scheme is based on the available reagents using. As a result of Michael addition, the aromatic amines to 2-hetaryl-2-(furanyl-2-ylidene)acetonitriles followed by ring transformations has formed two types of products, depending on the reaction conditions. The reaction of substituted furanylylideneacetonitriles with aromatic amines proceeds in good to high yields affording the corresponding 3-(arylamino)hex-2-enenitriles and 2-(N-arylpyrrolidin-2-ylidene)acetonitriles derivatives. The stereochemistry of the ring-opening reaction follows the rules of a classical SN2 mechanism. The resulting linear products can be cyclized to 2-hetaryl-2-(furanyl-2-ylidene)acetonitriles in high yields by treatment with the catalytic amount of acid or the equimolar amount of aromatic amines. Under these conditions 2-hetaryl-6-hydroxy-3-(arylamino)hex-2-enenitriles arising from reaction gives the ring closure. Since both ring-opening and cyclisation occur with fixed stereochemistry the reaction appears a valuable modification to the preparation of acetonitriles derivatives. Keywords: 2-hetaryl-2-(furanyl-2-ylidene)acetonitriles, 2-hetaryl-2-(N-arylpyrrolidin-2-ylidene)acetonitriles, 2-hetaryl-6-hydroxy-3-(arylamino)hex-2-enenitriles, aromatic amines.![]() РЕАКЦІЇ 2-ГЕТАРИЛ-2-(ДИГІДРОФУРАН-2(3Н)-ІЛІДЕН)АЦЕТОНІТРИЛІВ З АРОМАТИЧНИМИ АМІНАМИШемеген Р., ruslana_shemegen@ukr.netХиля О. Воловенко Ю. Київський національний університет імені Тараса Шевченка, Київ, Україна Вісник Київського національного університету імені Тараса Шевченка. Хімія. 2020, Випуск 1(57), С. 47-51. https://doi.org/10.17721/1728-2209.2020.1(57).12 Ключові слова: 2-гетарил-2-(дигідрофуран-2(3H)-іліден)ацетонітрили, 2-гетарил-2-(N-арилпіролідин-2-іліден)ацетонітрили, 2-(2-гетарил)-6-гідрокси-3-ариламіно-2-гексенонітрили, ароматичні аміни, амінування. ![]() |