作者:Anna M. Daniels、Megan A. Supinski、Daniel P. Kennedy、William D. Robinson、Edward J. Valente
DOI:10.1007/s10870-012-0377-7
日期:2013.1
Unhindered furan pseudoacyl chlorides react with hydroxylamine and a carbonate base to form oxidized cyclic N-hydroxyiminoimides. Thus, 3-chloroisobenzofuran-1-one forms 3-hydroximinoisoindolin-1-one (4) C8H6N2O2. Molecules are nearly planar and E-secondary amides hydrogen-bond with oximes through N(H)···N 2.920 Å and O(H)···O 2.720 Å contacts, and form infinite chains. Mucochloryl chloride (2,3,4-trichlorodihydrofuran-1-one) forms a similar hydroxyiminoimide (5E)-3,4-dichloro-5-hydroxyiminopyrrol-2-one (6), C4H2Cl2N2O2. However, opianic acid forms a mixture of mostly N-hydroxyphthalimide [6,7-dimethoxy-N-hydroxyisoindolin-1,3-dione (9)], C10H10N2O2, with small amounts of open oxime carboxylate [potassium 2,3-dimethoxy-6-(N-hydroxymethanoyl)benzoate (8) C10H10NO5K], and 2,3-dimethoxyphthalimide (10), C10H9NO4. These results suggest an intermediate pseudo-oxime, and such a derivative has been made in quantitative yield in a dehydration resistant arylpyran pseudoacyl system. 3-Chloro-4,4-dimethylisobenzopyran-1-one reacts with two equivalents of hydroxylamine and a carbonate base to form 2-hydroxy-3-(hydroxyamino)-4,4-dimethyl-3H-isoquinolin-1-one (14), C11H13N2O3, a pseudo-oxime. Pairs of pseudo-oximes form four hydrogen-bonds in two complementary sets, with N(H)···O 3.008 Å and O(H)···O 2.685 Å. Molecules are also linked in chains by hydrogen-bonds with O(H)···O 2.696 Å. These products have been characterized by spectroscopy and X-ray diffraction. .
无阻碍的呋喃假酰基氯与羟胺和碳酸盐碱反应生成氧化的环状 N-羟基亚胺。因此,3-氯异苯并呋喃-1-酮形成 3-hydroximinoisoindolin-1-one (4) C8H6N2O2。分子几乎是平面的,E-仲酰胺通过 N(H)--N 2.920 Å 和 O(H)--O 2.720 Å 接触与肟形成氢键,并形成无限链。Mucochlory chloride(2,3,4-三氯二氢呋喃-1-酮)会形成类似的羟基亚氨基亚胺 (5E)-3,4-二氯-5-羟基亚氨基吡咯-2-酮 (6),即 C4H2Cl2N2O2。然而,阿片酸形成的混合物主要是 N-羟基邻苯二甲酰亚胺[6,7-二甲氧基-N-羟基异吲哚啉-1,3-二酮(9)](C10H10N2O2),以及少量开放的肟羧酸盐[2,3-二甲氧基-6-(N-羟基甲酰)苯甲酸钾(8)C10H10NO5K]和 2,3-二甲氧基邻苯二甲酰亚胺(10)(C10H9NO4)。这些结果表明存在一种中间假肟,而且这种衍生物已在耐脱水芳基吡喃假酰基体系中定量制得。3-氯-4,4-二甲基异苯并呋喃-1-酮与两当量的羟胺和碳酸盐碱反应生成 2-羟基-3-(羟基氨基)-4,4-二甲基-3H-异喹啉-1-酮 (14),C11H13N2O3,这是一种假肟。成对的假肟在两个互补组中形成四个氢键,N(H)--O 为 3.008 埃,O(H)--O 为 2.685 埃。分子还通过氢键连接成链,O(H)--O 2.696 埃。这些产品已通过光谱学和 X 射线衍射进行了表征。.