Stereoselectivity in intramolecular 1,3-dipolar cycloadditions. Nitrile oxides versus silyl nitronates
作者:W. Dehaen、A. Hassner
DOI:10.1016/s0040-4039(00)94618-5
日期:1990.1
Unlike nitrileoxides, silyl nitronates undergo highly stereoselective intramolecularcycloadditions to produce functionalized carbocyclic or heterocyclic rings.
与腈氧化物不同,甲磺酸硅烷基酯会经历高度立体选择性的分子内环加成反应,以生成功能化的碳环或杂环。
Cycloadditions. 44. A two-step conversion of carbonyl compounds into functionalized five- and six-membered ring thioethers via intramolecular cycloaddition
作者:Alfred Hassner、Wim Dahaen
DOI:10.1021/jo00307a023
日期:1990.9
DEHAEN, W.;HASSNER, A., TETRAHEDRON LETT., 31,(1989) N, C. 743-746
作者:DEHAEN, W.、HASSNER, A.
DOI:——
日期:——
HASSNER, ALFRED;DEHAEN, WIM, J. ORG. CHEM., 55,(1990) N0, C. 5505-5510
作者:HASSNER, ALFRED、DEHAEN, WIM
DOI:——
日期:——
Synthesis of new 2-substituted 3-amino-4-hydroxymethylthiophenes through intramolecular nitrile oxide cycloaddition processes and N,O-bond cleavage
作者:Venerando Pistarà、Antonino Corsaro、Maria A. Chiacchio、Graziella Greco、Paolo Quadrelli
DOI:10.3998/ark.5550190.0012.618
日期:——
A synthesis of new2-substituted3-amino-4-hydroxymethylthiophenes 7 is reported as a useful alternative to the long known oximation of oxothiophenes 8, followed by treatment with gaseous hydrochloric acid in a polar solvent. The synthesis consists of an INOC process of unsaturated sulfide nitrileoxides, obtained from the condensation of corresponding nitroalkenes and allylmercaptan and then dehydration