间位酯 拼音:jianweizhi 英文名称：meta-ester 分子式：C8H11NO6S2 结构式： 分子量：281.3 外观：灰白色粉末 说明:学名 间（β-硫酸酯乙基砜基）苯胺。主要用于合成KN型和M型活性染料。由间硝基苯磺酰化、羟乙基化、还原、酯化而得。
本文介绍了用重氮转移法合成具有较大空间位阻的重氮乙酸二环己基甲酯、 L- 薄荷酯和叔丁酯。
Synthesis of sterically hindered dicyclohexylmethyl, L menthyl and tert butyl diazoacetate by diazo transfer was described on this paper.
萃取能力随着酯烷基空间位阻的增大而显著降低。
Their extraction ability markedly decreases with the increase of the steric hindrance from ester alkyl group.
淀粉丁二酸单酯用作水泥分散剂时，其分散机理也主要来自空间位阻作用，且较长的极性侧链对空间位阻效应具有一定的贡献。
The dispersing ability of SSHE as cement dispersant also came from steric hindrance effect and long side chain contributed to steric hindrance in a certain degree.
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