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Functionalized β-Thiolactams by Lewis Acid Catalyzed Addition of Alkynyl Silyl Sulfides to Azomethines
作者:Wolf-Rüdiger Förster、Rainer Isecke、Carsten Spanka、Ernst Schaumann
DOI:10.1055/s-1997-1275
日期:1997.8
Thiophilic Lewis acids (e.g. zinc iodide) have a pronounced catalytic effect on the formal [2+2] cycloaddition of alkynyl silyl sulfides 2 and Schiff bases 3 to give 2-azetidinethiones 4. In contrast to uncatalyzed reactions, a large number of functionalities is tolerated and yields are significantly improved.
亲硫路易斯酸(例如碘化锌)对炔基硅硫化物 2 和席夫碱 3 的正式 [2+2] 环加成反应具有明显的催化作用,生成 2-氮杂环丁烷硫醇 4。与未催化的反应相比,能够容忍大量功能团,产率显著提高。
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Quast, Helmut; Kees, Frieder, Chemische Berichte, 1981, vol. 114, # 2, p. 774 - 786
作者:Quast, Helmut、Kees, Frieder
DOI:——
日期:——
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Quast, Helmut; Aldenkortt, Sven; Schaefer, Peter, Liebigs Annalen, 1995, # 12, p. 2171 - 2188
作者:Quast, Helmut、Aldenkortt, Sven、Schaefer, Peter、Schmitt, Edeltraud、Wuerthwein, Ernst-Ulrich
DOI:——
日期:——
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QUAST, HELMUT;BIEBER, LOTHAR;MEICHSNER, GEORG, CHEM. BER., 121,(1988) N2, C. 2117-2120
作者:QUAST, HELMUT、BIEBER, LOTHAR、MEICHSNER, GEORG
DOI:——
日期:——
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QUAST H.; KEES F., CHEM. BER., 1981, 114, NO 2, 774-786
作者:QUAST H.、 KEES F.
DOI:——
日期:——