Regioselective quadruple domino aldolization/aldol condensation/Michael/SNAr-cyclization: construction of hexacyclic indeno-fused C-nor-D-homo-steroid frameworks
摘要:
An operationally simple and highly atom-economic anionic quadruple domino reaction sequence for the synthesis of hexacyclic indeno-fused naphthalene/quinoline molecules having structural resemblance with the C-nor-D-homo-steroid nucleus has been developed. Promoter and solvent specificity, regioselectivity and mechanistic details were experimentally established. Catalyst concentration and solvent dependent switching of domino steps creating four new C-C bonds are discussed. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis of 1,2-Diacylbenzenes from<i>o</i>-Hydroxyaryl Ketone Acylhydrazones Using [(Diacetoxy)iodo]benzene
作者:Robert M. Moriarty、Bruce A. Berglund、M. Suresh Chander Rao
DOI:10.1055/s-1993-25857
日期:——
2′-Hydroxyacetophenone and 2′-hydroxypropiophenone acylhydrazones 3 are oxidized to 1,2-diacylbenzenes 4 using [(diacetoxy)-iodo]benzene in dichloromethane at room temperature in a synthetically useful and high yield reaction.
Oxidation of N-Aroylhydrazones of o-hydroxyaryl ketones withlead(IV)acetate: A facile route to aromatic o-diketones
作者:Antigoni Kotali、Petros G. Tsoungas
DOI:10.1016/s0040-4039(00)96497-9
日期:1987.1
N-Aroylhydrazones of o-hydroxyaryl ketones are oxidized with lead(IV)acetate to aromatic o-diketones in a synthetically useful reaction.
在合成上有用的反应中,用乙酸铅(IV)将邻羟基芳基酮的N-芳酰基hydr氧化为芳族邻二酮。
Pd(ii)-catalyzed direct C–H acylation of N-Boc hydrazones with aldehydes: one-pot synthesis of 1,2-diacylbenzenes
作者:Satyasheel Sharma、Aejin Kim、Jihye Park、Mirim Kim、Jong Hwan Kwak、Young Hoon Jung、Jung Su Park、In Su Kim
DOI:10.1039/c3ob41644e
日期:——
A palladium(II)-catalyzed directacylation of acetophenone N-Boc hydrazones with aldehydes via C–H bond activation is described. This protocol provides direct access to a range of 1,2-diacylbenzenes, which are useful precursors to construct biologically interesting and pharmaceutically important compounds.