53772-44-4Relevant articles and documents
Method for preparing photoinitiator, namely TPO and simultaneously preparing byproduct, namely benzyl chloride
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Paragraph 0021; 0023; 0025-0026, (2020/06/02)
The invention provides a method for preparing a photoinitiator, namely TPO and simultaneously preparing a byproduct, namely benzyl chloride. The method provided by the invention avoids the problem ofrecovery of a large amount of organic waste gas, namely chloroethane and the like in production of the TPO, and also avoids the problem of serious pollution caused by a large amount of the byproduct,namely chlorine in production of the benzyl chloride. The benzyl chloride is an important chemical raw material for preparing a photoinitiator 369, so the method disclosed by the invention greatly reduces the production cost. Meanwhile, the whole process is low in preparation cost, simple in operation process, safe and easily-controllable in reaction process and easy to realize large-scale production.
Synthesis of trifluoromethylated compounds from alcohols via alkoxydiphenylphosphines
Li, Jun-Li,Yang, Xian-Jin,Wang, Yanan,Liu, Jin-Tao
supporting information, p. 254 - 259 (2015/09/02)
The transformation of hydroxyl group in benzyl or allyl alcohols to trifluoromethyl was achieved via the reaction of the corresponding alkyloxydiphenylphosphine and CuCF3, generated in situ from methyl fluorosulfonyldifluoroacetate and CuI, under mild conditions. A plausible mechanism was proposed on the basis of experimental results.
Lewis acid or alkyl halide promoted rearrangements of phosphor- and phosphinimidates to N,N-disubstituted phosphor- and phosphinamidates
Wilkening, Ina,Del Signore, Giuseppe,Ahlbrecht, Wiebke,Hackenberger, Christian P. R.
experimental part, p. 2709 - 2720 (2011/10/18)
In this paper, we describe the synthesis of N,N-disubstituted phosphor- and phosphinamidates via alkyl halide or Lewis acid catalyzed rearrangements of phosphor- or phosphinimidates. Furthermore, we introduce a novel one-pot procedure for the synthesis of N,N-disubstituted phosphoramidates which prevents the isolation of potentially explosive alkyl azide derivatives. In this reaction sequence, several alkyl halides are converted in situ into the corresponding azides and reacted with phosphites to generate phosphorimidates. Final addition of a catalytic amount of Lewis acid to the mixture affords the N,N-disubstituted phosphoramidates in good to excellent overall yields. 1 Introduction 2 Synthesis of N,N-Disubstituted Phosphor- and Phosphinamidates 2.1 Alkyl Halide Catalyzed Rearrangement of Phosphin- and Phosphorimidates 2.2 Lewis Acid Catalyzed Rearrangement of Phosphin- and Phosphorimidates 2.3 One-Pot Procedure for the Formation of N,N-Disubstituted Phosphoramidates from Alkyl Halides 3 Conclusion. Georg Thieme Verlag Stuttgart - New York.
