作者:R. A. Novikov、R. R. Rafikov、E. V. Shulishov、L. D. Konyushkin、V. V. Semenov、Yu. V. Tomilov
DOI:10.1007/s11172-010-0011-9
日期:2009.2
corresponding cyclopropane upon the action of diazomethane in the presence of a Pd catalyst, whereas its reaction with methyl diazoacetate in the presence of Rh2(OAc)4 leads to the insertion of methoxycarbonyl carbene into the OH bond. From the ester obtained, l-diazo-3-6,8-dioxabicyclo[3.2.1]oct-2-en-4-yloxypropan-2-one was synthesized in several steps, its denitrogenation under the action of copper compounds
左旋葡萄糖酮与重氮乙酸甲酯反应首先生成 1-吡唑啉,然后根据反应条件进行脱氮作用形成环丙烷和不饱和化合物的混合物,或异构化为 2-吡唑啉,在吡啶存在下易于环二聚通过将 NH 片段添加到羰基上。左旋葡萄糖酮还原产物 6,8-二氧杂双环 [3.2.1]oct-2-en-4-ol,在 Pd 催化剂存在下,在重氮甲烷的作用下提供相应的环丙烷,而其与重氮乙酸甲酯在Rh2(OAc)4 的存在导致甲氧基羰基卡宾插入到 OH 键中。从获得的酯中,分几个步骤合成了 l-diazo-3-6,8-dioxabicyclo[3.2.1]oct-2-en-4-yloxypropan-2-one,