The reaction of bis-imidazoline with 1,2-dibromoethane and potassium carbonate in acetonitrile provided monobromide salt with a yield of 78.
在乙腈溶剂中，碳酸钾存在下，双咪唑啉和1，2-二溴乙烷进行扩环反应，得到环状中间体一溴盐，产率78。
In this paper, three alkyl substituted dimethyl phosphonates have been synthesized by trimethyl phosphite with 1-Bromopentane, 1-Bromohexane and 1,2-Dibromoethane.
以溴戊烷、溴己烷、1，2-二溴乙烷和亚磷酸三甲酯为原料，分别合成了戊基、己基、溴乙基取代的三种膦酸二甲酯化合物。
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