单选题 适中0.65 引用0 组卷418
已知醛或酮可与格氏试剂(R′MgX)发生加成反应,所得产物经水解可得醇:
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895896812208128/2896232311865344/STEM/5ff618d4-541c-4750-b61a-12c70955e0b9.png?resizew=391)
若用此种方法制取HOC(CH3)2CH2CH3,可选用的醛或酮与格氏试剂是
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895896812208128/2896232311865344/STEM/5ff618d4-541c-4750-b61a-12c70955e0b9.png?resizew=391)
若用此种方法制取HOC(CH3)2CH2CH3,可选用的醛或酮与格氏试剂是
A.![]() |
B.CH3CH2CHO与CH3CH2MgX |
C.CH3CHO与![]() |
D.![]() ![]() |
类题推荐
卤代烃与金属镁在无水乙醚中反应,可得格氏试剂RMgX,它可与醛、酮等羰基化合物加成,所得产物经水解可得醇:
+RMgX→![](https://img.xkw.com/dksih/QBM/2022/4/23/2964346175381504/2964882643623936/STEM/8b534c62d55d473c9826b279e1a1c1db.png?resizew=94)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cd0769981ca410101b4f2a3581cb57.svg)
,其中:R表示烃基,X表示卤原子。这是某些复杂醇的合成方法之一,现欲合成
,(已知:酮是两个烃基与羰基相连的有机物,最简单的酮是丙酮:
),可选用的醛或酮与格氏试剂是
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964346175381504/2964882643623936/STEM/a44c74d675c341c4b2995a8d5dea7b73.png?resizew=69)
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964346175381504/2964882643623936/STEM/8b534c62d55d473c9826b279e1a1c1db.png?resizew=94)
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964346175381504/2964882643623936/STEM/acb0fefc70ac4c37bf2c5b1e086ce1e0.png?resizew=71)
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964346175381504/2964882643623936/STEM/066d814809bf4cdb8740d2e8df5ebbd9.png?resizew=147)
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964346175381504/2964882643623936/STEM/28910d43cd5a4b8f96d350b52f4857f7.png?resizew=103)
A.HCHO与![]() | B.CH3CH2CHO与CH3CH2MgX |
C.CH3CHO与CH3CH2MgX | D.![]() |
已知:醛或酮可与格氏试剂(R′MgX):
![](https://img.xkw.com/dksih/QBM/2023/2/10/3171815266295808/3172525090291712/STEM/489c50d6d4064a218fb3b8e7721e30dc.png?resizew=326)
由乙醇合成CH3CH=CHCH3(2-丁烯)的流程如下:
![](https://img.xkw.com/dksih/QBM/2023/2/10/3171815266295808/3172525090291712/STEM/f35b5b44364a42e29d9970469aef510d.png?resizew=488)
下列说法错误的是
![](https://img.xkw.com/dksih/QBM/2023/2/10/3171815266295808/3172525090291712/STEM/489c50d6d4064a218fb3b8e7721e30dc.png?resizew=326)
由乙醇合成CH3CH=CHCH3(2-丁烯)的流程如下:
![](https://img.xkw.com/dksih/QBM/2023/2/10/3171815266295808/3172525090291712/STEM/f35b5b44364a42e29d9970469aef510d.png?resizew=488)
下列说法错误的是
A.③发生氧化反应,⑥发生消去反应 |
B.M的结构简式为CH3CH2X |
C.P的分子式为C4H10O |
D.2-丁烯与Br2以1∶1加成可得三种不同产物 |
卤代烃与金属镁在无水乙醚中反应,可得格氏试剂R-MgX,它可与醛、酮等羰基化合物加成:
所得产物经水解可以得到醇,这是某些复杂醇的合成方法之一,现欲合成CH3CH2CH(CH3)OH,下列所选用的羰基化合物和卤代烃的组合正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/25/865a2cee-4ce4-4e5e-a0ef-d52226707a6c.png?resizew=283)
A.丙醛和一溴甲烷 | B.丙酮和一溴乙烷 |
C.丙酮和一溴甲烷 | D.丙醛和一溴乙烷 |
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