Alkylation of ambident nucleophiles different places by using phase-transfer catalytic agent were studied in this paper.
本文究了在相转移催化条件下对两可亲核试剂不同位置的烷基化
。
Alkylation of ambident nucleophiles different places by using phase-transfer catalytic agent were studied in this paper.
本文究了在相转移催化条件下对两可亲核试剂不同位置的烷基化
。
The preparation of hydroxyacetone was studied by esterification of chloroacetone with sodium formate and alcholysis of acetonyl formate with methanol.
一氯丙酮、甲酸钠和甲醇为原料经酯化与醇解两步
合成羟基丙酮,
究了
条件对相转移催化酯化
及醇解
蒸馏过
的影响。
In software engineering, the degree of complication of a system or system component, determined by such factors as the number and intricacy of interfaces, the number and intricacy of conditional branches, the degree of nesting, the types of data structures, and other system characteristics.
在软件中,系统或系统组成部分的复杂
度由下述因素确定:接口的数量和错综
度、条件转移的数量和错综
度、嵌套的深度、数据结构的类型,
及其它一些系统特性。
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