Cyclic α-amino acids as precursors for synthesis of 2-amino-3-hetarylpyrrolin-4-ones and their spiro derivatives
作者:Alexey V. Dobrydnev、Tatyana A. Volovnenko、Yulian M. Volovenko、Gennady V. Palamarchuk、Oleg V. Shishkin
DOI:10.1007/s00706-012-0727-3
日期:2012.5
Abstractα-Aminoisobutanoic acid and some representatives of cyclic α-amino acids were converted to corresponding 1-phthalimido- and N-trifluoroacylated acid chlorides. Treatment of 2-(1H-benzimidazol-2-yl)acetonitrile with 1-phthalimidoacid chlorides in DMF unexpectedly gave 2-(1H-benzimidazol-2-yl)-3-(dimethylamino)-2-propenenitrile. On the other hand, the reaction of hetarylacetonitriles with N-trifluoroacylated
摘要将α-氨基异丁酸和一些环状α-氨基酸代表转化为相应的1-邻苯二甲酰亚胺基和N-三氟酰化酰氯。用1-邻苯二甲酰氯在DMF中处理2-(1 H-苯并咪唑-2-基)乙腈意外地得到2-(1 H-苯并咪唑-2-基)-3-(二甲基氨基)-2-丙烯腈。另一方面,杂芳基乙腈与N的反应-三氟酰化酰氯得到所需的(3-氰基-2-氧代-3-杂芳基丙基)-2,2,2-三氟乙酰胺,其经三氟乙酰化后提供目标2-氨基-3-杂芳基吡咯啉-4-酮。苯甲酰氯对苯并咪唑基氨基吡咯啉酮的酰化作用导致形成3-苯甲酰基-2,3-二氢-5-苯基-1 H-苯并[4,5]咪唑并[1,2- c ]吡咯并[3,2- e ]嘧啶-1-酮。 图形概要