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時(shí)飛銀蟲 (小有名氣)
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| A new synthesis of dialkyl tri-and tetrasulfides was carried out by alkylating in situ generated potassium polysulfide. The procedure consists of adding elemental sulfur to a suspension of potassium hydroxide in tetrahydrofuran containing a small quantity of water or a phase-transfer catalyst, and then adding the alkyl halide. Usually , a mixture of dialkyl polysulfides is formed, the composition depending on the reaction conditions. the dialkyl trisulfide or tetrasulfide is generally the main product and can be isolated by bulb-to-bulb distillation |
金蟲 (正式寫手)
雷鋒
| 二烷基三和四硫化物的合成新進(jìn)行烷基化原位產(chǎn)生的氫硫化物。該過(guò)程包括加入元素硫,以氫氧化鉀的懸浮液中含有少量的水或相轉(zhuǎn)移催化劑四氫呋喃,然后加入烷基鹵。通常,二烷基多硫化物的混合物中形成,所述組合物根據(jù)反應(yīng)條件。二烷基三硫化物或四硫化物通常是主要產(chǎn)物,并且可以通過(guò)球?qū)η蛘麴s進(jìn)行分離 |

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