美国9月制造业放缓，原材料价格大涨

yun2026

美国9月制造业放缓，原材料价格大涨

2026年9月，中国科学院上海有机化学研究所公布一项精准合成研究。团队围绕官能团化的1,3-二烯设计钯与酸协同参与的催化体系，使相同起始原料能够按不同路径生成空间结构不同的产物。这类原料在化学合成和工业生产中十分常见，但多个反应位置与空间构型同时存在，往往增加了定向制备的难度。

研究人员通过设计手性配体，并调节酸、碱等反应条件，实现了对反应位置、双键几何形态以及多种立体选择性的协同控制。所用条件较温和，催化剂用量可降低至千分之一，体系对空气和水也不敏感。产物保留的酯基为后续改造留下空间。机理实验和计算进一步解释了不同反应步骤如何影响最终结构，为调整催化条件提供依据。该工作为从同一原料出发构建不同精细化学品提供新工具，其价值主要在于提高合成选择性和拓展结构设计能力，具体生产应用仍需针对目标产物开展工艺评估。

https://lightroom.adobe.com/shares/180151353d9569458e8175afe642bb0f
https://lightroom.adobe.com/shares/6dfc620eb302fc4d9e62fe7b681f17a2
https://lightroom.adobe.com/shares/15b1bd8c098657488d9b6a81eb7e6298
https://lightroom.adobe.com/shares/522f283184ded144b325dcfcfb2cefcb
https://lightroom.adobe.com/shares/547d105efbd2f84faeeec7ef50f65ad9
https://lightroom.adobe.com/shares/b690f3649a607a41869448163fb8e845
https://lightroom.adobe.com/shares/dd1fce7baf52114e922985124d95ec81
https://lightroom.adobe.com/shares/79f1f9636d43cb47aa02d8b18bb12acf
https://lightroom.adobe.com/shares/1d8bdfd66293b54cbec162fc7a5fc273
https://lightroom.adobe.com/shares/8d70c00df6624843a09f30322dc9aa49
https://lightroom.adobe.com/shares/65ba94de8e3b3240b5477946fcf9755b
https://lightroom.adobe.com/shares/87c3d01d7602da42b35735f69ab6832b
https://lightroom.adobe.com/shares/7767df77a017ac409e813b4c673c0af1
https://lightroom.adobe.com/shares/07101acabc4c97459db38b64b123e893
https://lightroom.adobe.com/shares/d3f05a32ca7f394889d17b9d7c0c8939
https://lightroom.adobe.com/shares/a84757d1e1faba41a81c3ef03e8437e9
https://lightroom.adobe.com/shares/62c5dfbd441b8f478a4e9efd63ea1252
https://lightroom.adobe.com/shares/3cae0cb821bf8b43b2ef0b3968f869e3
https://lightroom.adobe.com/shares/44ac3fa5d305c34b9826c99b4cc96fbe
https://lightroom.adobe.com/shares/330f73fb59947c44b3e970f9a3adc152
https://lightroom.adobe.com/shares/48e486028b56884aa444201710c3ff60
https://lightroom.adobe.com/shares/5040990f2d28b94a842be57479ac27fb
https://lightroom.adobe.com/shares/8b95ff1ca723774da9ff6aaaa61e4d08
https://lightroom.adobe.com/shares/09ff3138a095114e8b85befb52133337
https://lightroom.adobe.com/shares/feb5fafeb86e0243b8e1acc39581cb2d
https://lightroom.adobe.com/shares/628a8fd5483965479c47f58ab5283ca1
https://lightroom.adobe.com/shares/b3d6ec7bb43a2842b133adedaf710460
https://lightroom.adobe.com/shares/800073009a668144abc490ac33de3187
https://lightroom.adobe.com/shares/2666d0200b663742abc0c96be06b4b40
https://lightroom.adobe.com/shares/53f576ceaa115b478b981721a3c3a7f2
https://lightroom.adobe.com/shares/b9d011314c0ccb42a41d49e8aa44ede4
https://lightroom.adobe.com/shares/993ef792834500489b42f0af1efda650
https://lightroom.adobe.com/shares/aa440a47e1398c4cabeeaf426ca27ce0
https://lightroom.adobe.com/shares/f98a57425afc954aa3b32a9e6527a849
https://lightroom.adobe.com/shares/1df14507d397014195dffd69d0b02579
https://lightroom.adobe.com/shares/483238a5d6ad684d8e76eb947839347a
https://lightroom.adobe.com/shares/55aa59ce21c87b4fa6bcab95e3afe7ea
https://lightroom.adobe.com/shares/bc23526e89fe164a855fb0b0420630a3
https://lightroom.adobe.com/shares/160cc8f3f61bca4a9567422e6f61265f
https://lightroom.adobe.com/shares/6c3a57a2172d5e46b19df26992e39916
https://lightroom.adobe.com/shares/ad2c14c2493c0d4894ead77e17a45b3a
https://lightroom.adobe.com/shares/77a2c99f94264c46ad9e65ea6014f45f
https://lightroom.adobe.com/shares/d15b15d9633ca74f8661332fbffb0b79
https://lightroom.adobe.com/shares/51c4cb57ce88304ea4ea044c085c4ea7
https://lightroom.adobe.com/shares/fc6964e13df02441b9e727a2fc5d5e49
https://lightroom.adobe.com/shares/e6ac44f6de326740ad1be94faaea7334
https://lightroom.adobe.com/shares/9f2391190875b448b2eb5ef05d8a3bcd
https://lightroom.adobe.com/shares/f75bdd59e983e243864ec9c8f95a49d1
https://lightroom.adobe.com/shares/098b67f87d11bc4e8268539a6e05f9f6
https://lightroom.adobe.com/shares/753f2a881fbf984dbb2d0e6d19258752