On January 4, 2019, Wang, Zesheng; Cong, Xin; He, Guangwen; Liu, Chao; Dong, Ke; Wang, Peng; Cui, Qian; Yu, Yanbing published a patent.Category: esters-buliding-blocks The title of the patent was Preparation method of iodophosphine oxide ligand, complex and catalyst system comprising the iodophosphine oxide ligand, and application of the catalyst system. And the patent contained the following:
The invention discloses a preparation method of an iodophosphine oxide ligand, a complex comprising the iodophosphine oxide ligand, a catalyst system comprising the complex, and application of the catalyst system in the preparation of isocaprylic acid by oxidizing isooctyl aldehyde. The iodophosphine oxide ligand has a structural formula I as shown in claim 1, wherein in R1-R10 are independently selected from electron-withdrawing functional group of CF3, F and Br, or electron-donating functional group of CH3, OCH3 and CH(CH3)3; and preferably, R1 = R4, R2 = R3, R6 = R9, R8 = R5, and R7 = R10. The catalyst system adopts the iodophosphine oxide ligand and cesium complex as the catalyst, and a potassium salt as a co-catalyst, and was used for preparing isocaprylic acid by oxidizing isooctyl aldehyde. The inventive preparation method can overcome the defect of poor selectivity in prior art, and has mild process. The ligand has simple preparation, high activity, and low using amount The experimental process involved the reaction of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate(cas: 141940-37-6).Category: esters-buliding-blocks
The Article related to iodo aryl phosphine oxide ligand preparation oxidation catalyst, Organometallic and Organometalloidal Compounds: Phosphorus Compounds and other aspects.Category: esters-buliding-blocks
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