1,1-Diphenylpropanonoxim;1,1-diphenyl-acetone oxime;1,1-Diphenyl-aceton-oxim;Oxim des 1,1-Diphenyl-(14C)-acetons;1,1-Diphenylpropan-2-on-oxim;1,1-Diphenylacetonoxim;Diphenylacetoxim;N-(1,1-diphenylpropan-2-ylidene)hydroxylamine
Direct conversion of oximes and hydrazones into their ketones with dinitrogen tetroxide
作者:Sung Bo Shim、Kweon Kim、Yong Hae Kim
DOI:10.1016/s0040-4039(00)95802-7
日期:1987.1
Treatement of various oximes and hydrazones with dinitrogentetroxide(N2O4) at low temperature in acetonitrile gave the corresponding ketones respectively in excellent yields.
A modular 2H-azirine synthesis from ketoximeacetates via Cs2CO3-mediated cyclization has been developed. The reaction utilizes easily available starting materials and provides a general synthetic route to 2,3-diaryl-2H-azirines in good to excellent yields under mild conditions, which is complementary to the conventional approaches for the synthesis of 2H-azirines. A gram-scale reaction was performed
已经开发了由乙酸酮肟通过Cs 2 CO 3介导的环化合成的模块化2 H-叠氮基。该反应利用容易获得的原料,并在温和条件下以良好至优异的产率提供了合成2,3-二芳基-2 H-叠氮基的一般合成路线,这是合成2 H-叠氮基的常规方法的补充。进行了克级反应以证明该合成方法的放大适用性。重要的是,2 H-叠氮基可以有效地转化为各种氮杂杂环。
Titanium(III) Chloride Mediated Reduction of 1-Nitro-2-phenylethenes
nes (β-nitrostyrenes) with aqueous titanium(III) chloride afforded substituted pyrroles in addition to the expected reduction products, oximes and carbonyl compounds. 2-Substituted 1-nitro-2-phenylethenes yielded divinylamine derivatives instead of pyrroles. The reaction mechanism has been rationalized by taking account of the electron transfer from titanium(III) species to the nitro olefins, followed
Palladium-Catalyzed Amination of Aromatic C−H Bonds with Oxime Esters
作者:Yichen Tan、John F. Hartwig
DOI:10.1021/ja100676r
日期:2010.3.24
conceptually new approach to the direct amination of aromatic C-H bonds. In this process, an oxime ester function reacts with an aromatic C-H bond under redox-neutral conditions to form, in the case studied, an indole product. These reactions occur with relatively low catalyst loading (1 mol %) by a mechanism that appears to involve an unusual initial oxidative addition of an N-O bond to a Pd(0) species