Synthesis and catalytic activity of a Strandberg-type molybdophosphate modified by organic cations was written by Liu, Zhaoyu;Zhu, Haotian;Lu, Mingda;Li, Xiaohui;An, Yue;Zhang, Lancui. And the article was included in Yingyong Huaxue in 2015.Quality Control of 1,4-Dioxaspiro[4.5]decane This article mentions the following:
A Strandberg-type molybdophosphate {H4(H2biim)5(C(NH2)3)4} [H2P2Mo5O23]2 · 8H2O (1, H2biim = 2,2′-biimidazole) modified by 2,2′-biimidazole and guanidinium cations was self-assembled in aqueous solution of pH = 3-4 containing sodium molybdate, 2,2′-biimidazole, guanidine hydrochloride and an excess of phosphoric acid, and was characterized by single crystal X-ray diffraction anal., IR spectroscopy (FT-IR), themogravimetry-DTA (TG-DTA) and X-ray powder diffraction (XRD). Compound 1 has a stable 3D organic-inorganic hybrid framework. It was used as a catalyst for carbonyl-protection. The synthesis of cyclohexanone ethylene ketal was performed as an example to investigate some influence factors on the yield, such as catalyst loading, molar ratio of reactants and reaction time. The optimal conditions are: the molar ratio of catalyst (based on Mo) to ketone is 1:300, the molar ratio of ketone to alc. is 1:1.4, and reaction time is 2.5 h. The catalytic activity of compound 1 for the synthesis of four other ketals was evaluated. The results show that compound 1 is a better catalyst for the synthesis of cyclohexanone ethylene ketal. In the experiment, the researchers used many compounds, for example, 1,4-Dioxaspiro[4.5]decane (cas: 177-10-6Quality Control of 1,4-Dioxaspiro[4.5]decane).
1,4-Dioxaspiro[4.5]decane (cas: 177-10-6) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Quality Control of 1,4-Dioxaspiro[4.5]decane
Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem