碱性胺是许多具有生物活性的天然产物和药物的关键元素。鉴于其固有的反应性,在靶向合成过程中通常需要保护碱性胺,这会导致保护/脱保护序列的浪费。我们报告了一种分步经济的方法,能够在仲胺通过 CO 2的正式挤出转化为叔胺之前将其保护为氨基甲酸酯。该方法适用于 iboga 生物碱 (±)-conodusine A 和 (±)-conodusine B 的合成。
ammonium carbamates with trimethylchlorosilane. Trimethylsilyl NN-dimethylcarbamate can be used for silylation of alcohols,phenols, and carboxylicacids. The silycarbamates react with carboxylicacid halides to give the corresponding acide amides. The reaction of trimethylsilyl carbamates with carboxylicanhydrides give the corresponding silyl carboxylate and acid amide, while the reaction with dicarboxylic
Boldyreva, N. A.; Komarov, N. V.; Andreev, A. A., Journal of general chemistry of the USSR, 1988, vol. 58, p. 1725 - 1726
作者:Boldyreva, N. A.、Komarov, N. V.、Andreev, A. A.
DOI:——
日期:——
Boldyreva, N. A.; Komarov, N. V.; Andreev, A. A., Journal of general chemistry of the USSR, 1988, vol. 58, # 8, p. 1725 - 1726
作者:Boldyreva, N. A.、Komarov, N. V.、Andreev, A. A.
DOI:——
日期:——
Reactions of stannyl carbamates with organochlorosilanes
作者:N. V. Komarov、N. A. Ryzhkova、A. A. Andreev
DOI:10.1007/bf00695833
日期:1994.2
Rapid and exothermic reactions of stannyl carbamates with organochlorosilanes result in cleavage of the Sn-O-C bond and afford silyl carbamates in a high yield.
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作者:N. A. Ryzhkova、N. V. Komarov
DOI:10.1023/a:1011302004605
日期:——
Hexa-n-butyl- and hexaisopentyldigermoxanes but not hexaphenyldigermoxane react with O-trimethylsilyl N,N-diethylcarbamate and trimethylsilyl piperidinocarboxylate to give O-triorganylgermyl carbamates.