Keywords Oxidation · Photoinitator · 2,4,6-Trimethylbenzoyldipenylphosphine oxide · Vanadium · MCM-41 Electronic supplementary material The online version of this 1 Introduction article (https://doi.org/10.1007/s10562-018-2299-2) contains supplementary material, which is available to authorized users. Monoacylphosphine oxides (MAPOs) are highly effective radical photoinitiators, which are widely used in the cur- * Qing Yu firstname.lastname@example.org ing of white pigmented coating [1, 2] and biomedicalma- terials [3–5], especially dental [6–11] and orthopedic resin * Zhongwei Wang email@example.com composites [12–14]. However, only two methods are known for the synthesis of MAPOs. Method I is one-step reaction Extended author information available on the last page of the article Vol.:(0123456789) 1 3 954 T. Wang et al. of acyl chloride and alkoxyphosphine. Method II is two- for catalyst preparation. For comparison, the performance step reaction: (1) aldehyde reacts with diphenylphosphine of VO(acac) + TBHP system was tested. oxide to form α-hydroxyphosphine oxide; (2) followed by oxidation of α-hydroxyphosphine oxide to MAPOs. Com- paratively, Method I has limited substrate tolerance and 2 Experimental forms by-product of alkyl chloride (difficult to handle) [ 15]; Method II has the advantage of mild reaction condition and 2.1 Catalyst Preparation broad substrate scope. Thus, Method II is commonly used in MAPOs synthesis. MCM-41 supported vanadium (V/MCM-41) catalysts
Catalysis Letters – Springer Journals
Published: Jan 23, 2018
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