The use of diborane and deuterodiborane in the synthesis of isotopically labeled amines
作者:Frederick J. Marshall、Robert E. McMahon、William B. Lacefield
DOI:10.1002/jlcr.2590080312
日期:1972.7
The use of diborane has facilitated the preparation of several amines labeled with carbon-14 or nitrogen-15 by reduction of the corresponding labeled nitrile or amide. Its use was particularly advantageoue in the presence of aromatic halide substituents. Deuterodiborane, formed in situ from sodium borodeuteride and dimethyl sulfate, has been shown to be useful in the synthesis of 1, 1-dideuteroamines. Amines prepared in this study include nortriptyline labeled with nitrogen-15, deuterium or both,; 2-(o-chlorophenoxy) ethyl-N-cyclopropylamine as the 1-14C-derivative and as the 1, 1-dideutero derivative; 2-(2, 4-dichloro-6-phenylphenoxy) ethyl-1-14C amine and its 2-chloro-6-phenyl analog; and 3-aminomethyl14C-pyridine.
二硼烷的使用有助于通过还原相应的标记腈或酰胺来制备多种标记碳-14 或氮-15 的胺。在有芳香族卤化物取代基的情况下,使用二硼烷尤其有利。由硼氘化钠和硫酸二甲酯原位生成的氘代二硼烷已被证明可用于合成 1,1-二氘代胺。 本研究中制备的胺包括用氮-15、氘或两者标记的去甲替林;2-(邻氯苯氧基)乙基-N-环丙胺的 1-14C 衍生物和 1,1-二氘代衍生物;2-(2,4-二氯-6-苯基苯氧基)乙基-1-14C 胺及其 2-氯-6-苯基类似物;以及 3-氨基甲基 14C 吡啶。