Reductive cleavage of N-substituted 2-aryl-1,3-oxazolidines: generation of .alpha.-amino-substituted carbanions
摘要:
The behavior of several N-substituted 2-aryl-1,3-oxazolidines has been investigated under conditions of electron transfer from alkali metals in aprotic solvents. The reduction led to the regioselective cleavage of the benzylic carbon-oxygen bond, with formation of the corresponding N-substituted benzylamino alcohols in good yields. Investigation of the mechanism of this reductive cleavage, with the aid of labeling experiments, showed the intermediate formation of alpha-tertiary amino-substituted carbanions.
Rh2(oac)4-catalyzed reactions of methyl diazoacetate with 1,3-oxazolidines and 1,3-oxathiolanes
作者:M. D. Khanova、R. M. Sultanova、S. L. Khursan、V. A. Dokichev、Yu. V. Tomilov
DOI:10.1007/s11172-006-0441-6
日期:2006.8
Methoxycarbonylcarbene generated by catalytic decomposition of methyldiazoacetate in the presence of Rh2(OAc)4, is regioselectively inserted into the C(2)-O bond of 3-alkyl-2-phenyl-1,3-oxazolidines and into the C(2)-S bond of 2-phenyl-1,3-oxathiolane. Study by the competitive reaction method demonstrated that the relative reactivity toward the insertion of the methoxycarbonylcarbene fragment into
Diphenylethylamines. I. The Preparation of Tertiary Amines by the Grignard Reaction<sup>1,2</sup>
作者:Louis H. Goodson、Hope Christopher
DOI:10.1021/ja01157a097
日期:1950.1
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作者:A. P. Molchanov、A. V. Stepakov、J. Kopf、I. G. Zenkevich、R. R. Kostikov
DOI:10.1023/a:1015057519648
日期:——
The reactions of metiloxycarbonylcarbene, which was generated by catalytic thermal decomposition of methyl diazoacetate, with 3-ethyl-2-phenyl- or 2,3-diphenyloxazolidines resulted in the insertion of the former predominantly at the C-N bond of the oxazolidine ring to produce substituted esters of morpholine-3-carboxylic acid.
SABA, SHAHROKH;DOMKOWSKI, PATRICK W.;FIROOZNIA, FARIBORZ, SYNTHESIS (BRD),(1990) N0, C. 921-923
作者:SABA, SHAHROKH、DOMKOWSKI, PATRICK W.、FIROOZNIA, FARIBORZ